Migrating Birds Take Hundreds of Powernaps.

Ant writes "MSNBC reports that to help make up for sleep lost during marathon night flights, migratory birds take hundreds of powernaps during the day, each lasting only a few seconds, a new study suggests. Every autumn, Swainson's thrushes fly up to 3,000 miles from their breeding grounds in northern Canada and Alaska to winter in Central and South America. Come spring, the birds make the long trek back. The birds fly mostly at night and often for long hours at a time, leaving little time for sleep."

this early in the morning

[yincrash]

At 4:20 in the morning, I could a couple of power naps as well.

Re:

[theundergroundman]

I'm actually going to power up something else once it gets to 4:20 west coast time.

Re:

[freedom_india]

The fact that you could not complete your sentence properly shows your level of sleep deprivation:

At 4:20 in the morning, I could do with a couple of power naps as well.

Re:this early in the morning

[Snover]

At 4:20 [wikipedia.org], it may not be sleep deprivation inhibiting his ability to speak correctly...

Re:

[rf0]

"I had to get up in the morning at ten o'clock at night half an hour before I went to bed, drink a cup of sulphuric acid, work twenty-nine hours a day down mill, and pay mill owner for permission to come to work, and when we got home, our Dad and our mother would kill us and dance about on our graves singing Hallelujah."

So neh

http://www.phespirit.info/montypython/four_yorkshi remen.htm [phespirit.info]

Re:

[noidentity]

At 4:20 in the morning, I could [take] a couple of power naps as well.

Looks like you took one int he middle of that sentence!

Why they sleep only a few seconds

[Jamu]

Flap flap flap
Must stay awake...
Zzzzzzzzzzzzzzzzz
AHHHHHHHHHHHHHHHHHHHHHHHH! I'm falling!
Flapflapflapflapflap
Flap flap flap
Must stay awake...

Re:

[Firehed]

That's about what it's like in traffic too. Except replace "I'm falling!" with "Oh shit, just fell asleep at the red light again!"

I suggest you *not* try it sometime.

Re:

[tttonyyy]

1. Invent Jolt-Cola for birds (I dunno, something that straps to their beaks or similar)
2. PROFIT!

Re:

[Anonymous Coward]

Birds don't have money.

Re:

[ZeroExistenZ]

Birds don't have money.

That that's why they keep on harrasing me in the city for food! The lazy bums should get a job like everyone else!

Re:

[henrygondorff]

Sure, much like Brian [worle.com] said! (Find "birds" in the linked page)
---
b.log [blogspot.com]

Re:

[fafaforza]

1. Invent JoltCola for birds
2. Create a NGO for the support of migratory birts that lack funds for their basic needs, and make everyone feel bad that they wouldn't spare a dime for the poor birds.
3. Profit!

Re:

[ari_j]

I dunno, something that straps to their beaks or similar

'e could grip i' by the 'usk!

Re:Why they sleep only a few seconds

[Archibald Buttle]

:-)

Not all that far from the truth.

Albatross (and related species) spend virtually their whole lives at sea, returning to land only to breed. They fish for food, but can't sleep on the sea surface because they'd get caught by preditors (some shark and whale species, sealions, etc). Their only opportunity for sleep is whilst they're flying - so they nap for a few seconds whilst they're gliding.

Urban legend alert

[Falkkin]

Urban legend -- albatrosses sleep on the surface, not in flight.

See http://en.wikipedia.org/wiki/Albatross#Morphology_ and_flight [wikipedia.org]

Re:Urban legend alert

[Red Flayer]

Urban legend -- albatrosses sleep on the surface, not in flight.

Poppycock. That is obviously not an urban legend -- it's a maritime legend.

Sheesh. When did all widely-believed falsehoods become urban legends, instead of just plain old legends, myths, etc?

Re:

[RealGrouchy]

Urban legend -- albatrosses sleep on the surface, not in flight.

Poppycock. That is obviously not an urban legend -- it's a maritime legend.

On the contrary. Maritimers know their stuff about birds; it's the urban population that makes these things up. :P

- RG>

Re:

[Red Flayer]

It was intended as a joke (albeit it was before my 2nd coffee, so not very funny).

Re:

[Archibald Buttle]

Sorry about that... I had been told the albatross sleeping mid-flight thing (rather than on the sea surface) by a PhD student whose thesis was on bird migration.

I should of course know better than to believe PhD students.

Curiously enough she did get her PhD. :-)

Re:

[TubeSteak]

Their only opportunity for sleep is whilst they're flying - so they nap for a few seconds whilst they're gliding.

We normally call it "micro sleep"

You know when you're so tired that you start nodding off before abruptly jerking your head back up? That is micro sleep and it generally lasts up to 3 seconds at a time.

I imagine birds are better at it than human pilots. Those few seconds are all it takes to go off the end of the runway, pancake during a landing, or to plow into the side of a mountain.

Re:

[aldheorte]

If you ever actually see an albatross at sea, you will know this is complete bullocks. An albatross take off is a drawn out and complicated affair with much beating of wings and windwilling of the legs. There is absolutely no way an albatross sitting on the surface could react fast enough to a predator to make an escape by getting airborne.

Re:

[shadwstalkr]

I thought they slept while they hung around the necks of old sailors.

Works for late night driving too

[Hoi Polloi]

Brrrrmmmm
Yawn...Must not sleep at wheel...
(sound of car hitting rumble strip)
Who!? What? Oh yah, must stay awake (turns up radio)
Zzzzz...

Re:

[HolyCrapSCOsux]

Ye Olde "Drive by Braille" method. Works like a charm!

Did the same thing as a student

[Anonymous Coward]

When I was a student I also took several power-naps during the day to make up for lack of sleep.

They were called lectures.

Re:

[west.to.east]

Wish I had some points

Re:

[CortoMaltese]

I actually attended (well, sort of) a course just because the lectures were held just after lunch in a lecture hall with very comfortable seats.

*sigh*

I wish my office walls weren't made of glass.

Re:

[TubeSteak]

I wish my office walls weren't made of glass.

Extra starch in your collars will help keep your head upright.

Just kidding.

Someone needs to manufacture a neck/head brace type thing that has a fake (or real) wire(d/less) headset built in so you can pretend to be on the phone while napping.

Re:

[Anonymous Coward]

Don't worry, the academic staff return the favor during your graduation...

Re:

[kfg]

I actually got a notation on a bad mid term once that I didn't get an F because the Prof figured I must have picked something up by osmosis.

Maybe next time I'll have to try it at the back of a hall, instead of front and center in office.

KFG

Re:

[Tetrad_of_doom]

Hey, are you one of my students?

Wish my boss understands this

[wannabgeek]

I only take tens of powernaps during the day, and my boss is threatening to fire me. (True, each of them lasts longer than a few seconds ;-)

Electronic Arts applauds

[Green Salad]

The HR department at Electronic Arts applauds the innovation as a "best practice."

Healthy birds

[sinistre]

Atleast they stay in good shape.

This is news?

[TrondS]

I remember hearing about this when I was like, 7-8 years old. I'm now 28.

Ah shucks

[novus ordo]

"I think what's interesting about our findings is that even animals that should be highly adapted to sleep loss cannot go on indefinitely," Fuchs said. "That a need for sleep cannot be eliminated even in these species underscores the importance of sleep for many, if not all, animals."

I hope I'm not the one to break this to my boss...he might even try to disprove him.

Maybe..

[l0cust]

Maybe the birds were getting those drowsy sessions and 'power naps' BECAUSE they were caged and being subjected to go through utterly boring and long observation periods when they would rather be flying over the ocean somewhere. Or they just closed their eyes every few minutes to curse the researchers to hell for caging them in the first place.

But seriously, studies of this kind tend to lose credibility when they start predicting the free behaviour of species while testing them under captive conditions. Going by this logic, I can say that lions in jungle start rattling the nearest metal bars or objects they can find when they feel hungry because I observed this behaviour in a bunch of lions in the nearest zoo. I know its stretching the point a bit, and that 'some' behaviour show consistence irrespective of the state of the subject animal/bird, BUT trying to deduce migratory behaviour (out of all things) from a bunch of observational data collected from birds in cages is stretching it too far IMHO.

Re:

[grammar fascist]

Going by this logic, I can say that lions in jungle start rattling the nearest metal bars or objects they can find when they feel hungry because I observed this behaviour in a bunch of lions in the nearest zoo.

You're obviously not a real scientist. A real scientist would have let the lions out of the cage before making any observations.

Re:

[l0cust]

A real scientist would have let the lions out of the cage before making any observations.

Exactly. Not only out of the cage but in a sufficiently open and 'jungle-like' wild & natural environment before even trying to observe their natural behaviour. Now do you understand what I was trying to say or do you want me to go all medieval on your ass !

Re:Maybe..

[TubeSteak]

You're obviously not a real scientist. A real scientist would have let the lions out of the cage before making any observations.

Which is why all that we have left are the 3rd rate hacks.

You couldn't be more wrong.

[viewtouch]

First of all, experiments I've read about have been done on birds that are flying, hence no cage.

More importantly, though, although you must accept the inevitability of sleep, nonetheless you assume that sleep is a behavior and that behavior can be affected by a cage. Well, the view that sleep is behavior has no scientific basis, in spite of the fact that we (as do other animals) have some control over when we sleep, which is, well, totally beside the point. The fact remains that we, and all animals, MUST sleep and we cannot change that. If we don't sleep, our immune and nervous systems shut down and we die. This is true of all animals.

The latest science indicates beyond any doubt that sleep has nothing to do with behavior but is, rather, a metabolic state (anabolism) which is, of course, cell-based and which, therefore, cannot be affected by putting a bird in a cage or by attaching a neuro-transmitter to a flying bird.

Studies of this kind, therefore, do NOT lose credibility because it is not behavior which is being tested, but rather it is what is being tested is a simple measurement of how the catabolic - anabolic (awake - asleep) balance is maintained in birds, in particular.

It's too bad everybody seems to think that either this is just a humorous article or that they aren't interested enough in understanding what sleep is to spend a few minutes either thinking about what sleep really is, or reading about it. Sleep is important enough that if you try to do without it you will soon be rendered useless and die. Understanding sleep can make your life better. Not getting good sleep makes your life hell, if it doesn't kill you. You can't alter the basic metabolism of life by deciding that you are somehow special and you can't understand sleep if you simply dismiss it as behavior.

Re:

[viewtouch]

There is no getting away from the fact that metabolism is present, by definition, in EVERY life form, and, even in single-cell life, is a balance between anabolism and catabolism. To the extent that animal life and plant life have a common source, and therefore have common metabolic fundamentals (at the most fundamental level) then the question of whether plants sleep is something that can be probed only by probing what sleep actually is at the most basic level. The answer is a very definite maybe. When w

Re:

[viewtouch]

I wrote major portions of that article. The fact that metabolic states are even mentioned there are because of the interaction I had with others there. Sleep cannot be properly understood as a phenonmenon of behavior. Sleep is generic to every living cell, including, of course, brain cells. Brain cells need to repair and to grow in a way that's different, however, from other types of cells. The brain is an instrument of survival or any 'higher' organism but that doesn't exempt its cells from the requir

Yes, they are

[viewtouch]

Yes, these stories are false.

Re:

[Asic Eng]

Well the article says that They found that during autumn and spring, when the birds are normally migrating, they reverse their typical sleep patterns [...]

So that does suggest something going on which is not related to the caging, since they were caged and observed during the whole year.

Yep...

[DuranDuran]

> to help make up for sleep lost during marathon night flights, migratory birds take hundreds of powernaps during the day, each lasting only a few seconds

Yep, just like my crazy uncle. But instead of gliding, he uses the cruise control.

Re:Yep...

[rf0]

Its like the old joke that Uncle Harold died peacfully in his sleep. Its just all his passengers in the car that were screaming

The way I heard it...

[Aqua_boy17]

Was "When I die, I want to go peacefully in my sleep like my Uncle Harold. Not screaming in terror like his passengers"

Humans Too

[HoneyBeeSpace]

Humans do the same thing. The term is "microsleep", lasting from 2 to 30 seconds or so, often with eyes open. A quick search returns hundreds of PDFs on the phenomenon.

As usual, there is a WikiPedia entry (not very useful) and this site too: http://www.sleepdex.org/microsleep.htm [sleepdex.org]

Hmmm... people do it. Birds do it. I'll be shocked when the research is published that fish do it too.

Re:

[Anonymous Coward]

I will be shocked when research is published that even educated fleas do it

Re:

[grammar fascist]

You just supplied every Slashdotter with the perfect excuse for not being able to answer a random question during a lecture. I hope you're pleased with yourself.

I am. Thanks a bunch!

Re:

[redGiraffe]

hmm, but tell me, do educated flees do it?

Re:

[Calinous]

Yep, I've done this once while driving (at 1 o'clock in the night). My eyes were closing on their own will, so I decided to keep them open. And with their open, a blank out of several seconds came - I've seen nothing for several seconds, with the eyes wide open. I was scared, so I've stopped, moved around, waited some time and started again.

Re:

[tttonyyy]

Wow, that's interesting.

My daughter, when she was young, would sometimes fall asleep with her eyes open. Totally freaked us out as parents, but apparently it happens. :)

Just goes to show that having the visual data coming in doesn't necessarily keep the brain awake.

Re:

[Reziac]

From TFA: "The thrushes also mixed up their shut-eye sessions with two other forms of sleep. In one, called unilateral eye closure, or UEC, the
birds rested one eye and one half of their brains while their other eye and brain hemisphere remained open and active, keeping them semi-alert to danger."

I learned to do this back when I was doing a lot of long-distance driving. I discovered that if I closed ONE eye, it evidently let half of my brain "take a nap". After half an hour or so, I'd be as refreshed as if I

Re:

[sillybilly]

"Microsleep" is so old fashioned. These days there is new technology called "nanosleep" that imparts a finer granularity to the experience of being awake. It is a subbranch of nanotechnology.

Not convinced

[tygerstripes]

How is this different from when you keep nodding your head and waking up when you're very, very tired but doing something critical/dangerous? Hasn't everyone, to their horror, experienced this when driving? Or when you're in a lecture, your head drops, and you jerk awake with an embarrassing snorting noise?

I wouldn't consider this to be an impressive evolved behaviour, so much as just what happens when a bird in flight is pushing itself to its limits of endurance. There just aren't many animals other than humans and avians that ever find themselves having to maintain such prolonged alertness to survive, so this is seen as a phenomenon. Try keeping squirrels on a wire over a pit of spikes or something, and you'll probably observe the same behaviour.

Re:

[grammar fascist]

Or when you're in a lecture, your head drops, and you jerk awake with an embarrassing snorting noise?

Noseplugs ought to fix that right up.

Try keeping squirrels on a wire over a pit of spikes or something, and you'll probably observe the same behaviour.

I recommend alligators for this.

Re:Not convinced

[tygerstripes]

Don't be stupid. Alligators can't balance on a wire.

Re:

[Red Flayer]

Or when you're in a lecture, your head drops, and you jerk awake with an embarrassing snorting noise?

Noseplugs ought to fix that right up.

Until you end up snorting the noseplugs into your sinus cavity. It's painful, and sometimes requires surgery to fix... or so I've heard ;).

Sleep apnea + foreign objects lodged in bodily openings --> Bad happenings.

the difference between birds and geeks...

[Vincman]

...is that birds are on a constant exercise-regiment while the trend with humans is that they become more and more sedentary, behind their PCs, xboxes, or otherwise. I'm just saying this because some "productivity-gurus" may draw the conclusion that we should follow birds' examples. If we ditched our cars and started running everywhere, on the other hand... zzz

yeah

[roguerez]

Some birds never touch ground during their life. Eat, sleep, all in the air.

http://verkiezingen2006.nl/ [verkiezingen2006.nl]

Re:

[Red Flayer]

I think technically, they hatch *when* they hit the ground.

yeah but do they get headaches?

[circletimessquare]

woodpeckers don't

@#$%^ Buzzwords

[hcdejong]

How, exactly, is a 'powernap' any different from a generic nap? I expect Bullshit Bingo from the WSJ, not from scientists.

Re:

[gstoddart]

How, exactly, is a 'powernap' any different from a generic nap? I expect Bullshit Bingo from the WSJ, not from scientists.

Well, since the term was invented by a psychologist and is a fairly widely used term, I think it's not quite Bullshit Bingo anymore.

There is a difference between a nap and a power nap, read the link I provided.

I know people (my father for one) who can close their eyes, be sound asleep and snoring inside of 30 seconds, sleep for 15-20 minutes, and wake up on their own and go for another

Sleeping time!

[Ice Wewe]

Great! Now I can finally catch up on some Zzz's buring class without the prof knowing!

Uberman

[Wooden7Dummy]

Reminds me of the Uberman sleep method.

swifts do it by half

[stuz]

I believe swifts are able to fly with half their brain asleep

The difference between Digg and Slashdot

[urbanradar]

Digg featured the same story just the other day. It was on another website, but presented the same facts. But, as opposed to Slashdot, they ran the article under the headline "Most flirtatious avatar [digg.com]". Somehow, I find that funny.

How do they avoid crashing?

[giafly]

FTA, these swallows sleep for "9 seconds on average".
If one stops flying completely for 9 seconds, the approximate distance it would fall is s = ut + 1/2at**2 [wikipedia.org] ... 0+1/2*32*9*9 feet ... 1296 feet.
But the barn swallow typically migrates within within 100 feet of the ground [nwf.org].
So how do they avoid crashing?

Re:

[giafly]

Unfortunately this is about thrushes. D'Oh! I wonder how high they fly?

Thrushes migrate at 0 to 2624 feet

[giafly]

"In migration along the coast, the Swainson's Thrush has been reported from sea level to about 800m [2624 feet] [royalbcmuseum.bc.ca] elevation." So they seems to be flying dangerously low if they do stop flying while sleeping, but not impossibly low. I wonder how many do crash?

Re:

[SpaghettiPattern]

the approximate distance it would fall is s = ut + 1/2at**2 ... 0+1/2*32*9*9 feet ... 1296 feet.

A few theories from me as an armchair scientist. If it has a way to lock it's wings it will fall slower. It will loose several seconds of direction control but maybe it has a mechanism to compensate.

Re:How do they avoid crashing?

[kfg]

But the barn swallow typically migrates within within 100 feet of the ground .

Even more impressive is the behavior of the Wandering Albatross which can fly for days at a time within a wingspan of ocean waves (albeit their wingspan is about 10 feet). They can do this even during a full gale.

So how do they avoid crashing?

They soar. Wings generate lift just because they're there and under the right conditions a bird might well increase its altitude while napping.

As a wave moves through the air, or air moves over a hill, it compresses and rises. Thus a sleeping bird may find itself safely carried over variations in surface hight without having to do a thing. It's called "slope soaring."

KFG

Re:

[aussersterne]

wings generate lift
birds have wings

Re:

[NeutronCowboy]

Not only that, but flying that close to the ocean, their wings create a "ground effect" (the same effect that allowed the Spruce Goose to lift off, but not to actually fly). I suspect all of these combine to allow the albatross to travel large distances without having to flap its wings... Waves provide energy to create a pressure differential, and the ground effect maximizes its usefulness to the albatross. Very cool stuff.

Re:

[hcdejong]

Preumably, lift doesn't drop to zero during sleep, so ag.

Re:

[hcdejong]

That should have read "a is less than g"

Re:

[Harlow_B_Ashur]

Maybe their glide ratio surpasses that of a ball of uranium.

Re:

[Tetrad_of_doom]

1) As others have mentioned, during sleep the birds are probably gliding.
2) The equation s = ut + 1/2at**2 neglects air resistance.

Re:

[viewtouch]

The best answer, as far as science has so far been able to ascertain, is at least two-fold. First, only half of the bird's brain is 'sleeping' (repairing itself, growing). Second, the muscles that maintain flight continue to respond even when asleep the same way that the muscles that maintain breathing respond even when asleep.

Re:

[loconet]

By sleeping when they are not flying.

Thrush Obituaries

[SCDavis]

Billy thrush was killed this morning when he fell asleep at the wing and flew into a 747 jet engine.

Timmy thrush was trajically killed when he also fell asleep at the wing and flew into some power lines and was electricuted.

Sam Thrush was killed today when he did not get enough sleep and saw what he thought was a worm on the ground and it ended up being a snake and the snake ate him.

that is all from Thrush news...

Re:

[suitti]

I was out birdwatching the other day. I thought i saw a thrush, but it was just a Robin.

Sketchy Logic

[MidnightBrewer]

The opening of the article states that the birds fly at night, which leaves little time for sleep.

Sure, if you discount the other half of the day.

I have to agree with the other commenters who pointed out that this is a good example of how watching a bird take naps in a cage may not be the best kind of science. For all we know, the birds in the wild are enjoying a hearty day's sleep, completely undisturbed by pesky lab techs trying to peer into their cage and see what they're doing. You keep looking at me

Did Anyone RTFA?

[ironwill96]

In the article it states: "Some scientists speculate that some birds might even be able to catch up on some forms of sleep while in flight, but this idea has yet to be fully tested.".

The article is not even about sleeping while flying, they are talking entirely of the bird's sleep states during the daytime (and then the birds would fly at night). But, what do I expect? This is /. after all where nobody reads the article and makes hilarious comments anyway.

birds split from mammals before dinosaurs

[peter303]

Its remarkable our nervous system shares several properties with bird, since the split was 200 million years ago. By evolutionary standars humans are practically cousins with mice, perhaps splitting only 60 million years ago.
Despite this, theres evidence some birds can processes some symbols, and perform simple counting. They dont seem to have the emotional range of mammals.

Re:

[Toba82]

I for one welcome soulless avian overlords who feel not a mite of our pain.

The sleep of a thousand first posts...

[fahrbot-bot]

MSNBC reports that to help make up for sleep lost during marathon night flights, migratory birds take hundreds of powernaps during the day, each lasting only a few seconds, a new study suggests.

I know how these birds feel, though my seconds-long powernaps usually occur while reading /. even though - zzz ...

Birds? Bah! Dolphins rule.

[fahrbot-bot]

From Dolphin Facts [dolphinear.com]

• How do dolphins sleep?
• Dolphins have to be conscious to breath. This means that they cannot go into a full deep sleep, because then they would suffocate. Dolphins have "solved" that by letting one half of their brain sleep at a time. This has been determined by doing EEG studies on dolphins. Dolphins sleep about 8 hours day in this fashion.

Damn. I wish I could do that.

Nah...

[Chelloveck]

They're just duty-cycling.

Reminds me of Uberman

[Zach978]

Reminds me of the Uberman's sleep cycle, sleep 30 mins every 4 hours, it's been on /. a few times...I don't think I can do it because I tend to go out and have drinks on the weekends...

http://www.kuro5hin.org/story/2002/4/15/103358/720 [kuro5hin.org]

Hundreds of powernaps, only a few second long each

[wuie]

...funny. That sounds a lot like high school.

Re:

[viewtouch]

Wrong Question. You should ask "What is the purpose of waking up". Once you understand why we wake up, to find nutrition, to ingest it, to expel waste and to procreate, activities which are all catabolic, then you can go on to accept the need for metabolic balance that anabolism (a.k.a. sleep) provides. First you do one, then you do the other, etc., throughout your entire life. When you fail to find nutrition, or to ingest it, or to expel waste, or to adequately repair or grow your body, then you die.

Re:

[viewtouch]

The cost of not sleeping adequately, of not allowing your body to repair, to grow, is devasting across the human race just as any disease is. Not sleeping well can ruin your life. Spend a few minutes studying phenomena such as sleep apnea and you'll hopefully gain an appreciation for the cost that people pay for suffering from this, largely because medical professionals are not taught the fundamentals of maintaining good health, concepts such as sleep, nutrition, diet, attitude. Look around you and you'l

Re:

[Reziac]

I've noticed that there is a direct correlation between [sliding scale of bipolar/OCD/panic disorder all the way out to schizophrenia] and a tendency to stay up all night. Up-all-night sleep-late patterns, and psych issues, tend to reinforce one another.

But normalizing the sleep cycle can mitigate the depression aspects. Go to bed at a reasonable hour and get up with the sun, and you'll feel better and be more productive over the long haul -- even if you have some other problem. And try to get three full sl

That's correct.

[viewtouch]

You're right. This correlation has been established, as have a whole host of other such correlations between sleep and health.

Sometimes a very ill patient is deliberately put into a coma for the fact that it is a deep-healing state. A fetus sleeps nearly all the time because sleep is the growth state, and because it has no need to be awake, not to find food, not to have to ingest it, not to expel it and certainly not to procreate. Same situation with animals that are born from eggs.

Doctors are, generally,

Re:

[Reziac]

While back a friend with chronic depression calls me raving about how good he'd been feeling all week. Seems he'd gotten worn out the week before and had therefore gone to bed at a decent hour, and got up by 10am (four hours before his usual). D'oh....

Interesting about use of coma for healing sleep.
[pro dog trainer hat] You can see how sleep is *required* in puppies too -- during rapid-growth phases, they sleep 20 to 22 hours a day, and will often fall asleep in the middle of doing something. They're also a