Log in

No account? Create an account

Previous Entry | Next Entry

I might have a new favorite bird...

So, the exciting thing I promised on Friday (for certain values of "exciting") was that on Friday evening, I attended a saw-whet owl banding demonstration at Drumlin Farm Audubon Sanctuary. I really didn't quite know what to expect from this, but it sounded kind of interesting. I ended up at the "family night" session, so it was me, some parents with kids, and the Young Birders group.

Well, let me tell you, it was totally cool.


I should say at the outset that these aren't the best-quality pics in the world, because mostly I was refraining from using my flash so as not to disturb the birds, and the ambient lighting was all compact-fluorescents (bah). And, I selected some shots that were fuzzy but that were interesting nonetheless. Still, I think the cuteness shines through.

So first, they brought out some demonstration owls that are resident at Drumlin Farm (which does not rehabilitate wildlife, but which does house some wild animals that for one reason or another can't be released).

First up: the Eastern Screech Owl (rufous phase):




I had no idea that screech-owls were so cute! I feel, in fact, that most pictures I have seen of them don't do them justice. This little fellow (boy or girl -- they don't know; you'd basically have to do DNA testing to find out) is, if I recall correctly, blind in one eye, and that's why he can't be released. As the handler pointed out, it takes a lot of training just to get to the point where a formerly wild owl like this will sit calmly in a bright room full of people.

Next up, a resident Great Horned Owl. I forget what problem this one had, though I recall the handler explaining that they'd gotten him/her quite young, and for some reason, the owl has never learned to hoot, or something. It's this gigantic bird, but it makes little tiny baby trills all the time.


Then we all trooped out into the dark woods to go to the nets.

The banding project has been going since the mid-90s, it sounds like, and there are more than 50 banding station nationwide. Only a very small percentage of the owls caught in any one season are banded, but when they ARE recaught, it helps to provide data about owl migration, as well as being an overall survey of owl populations. (See Project Owlnet site.)

It didn't sound like there's much of a concentrated effort to band other types of owl. The head owl bander told us that they do sometimes get screech owls in the nets, but I forgot to ask whether they opportunistically band those when they do, or not. What they do is, they put up these very long lengths of net out in the woods, and then they play a recorded version of the call of the bird they want to attract; in this case, the toot-toot-toot of the male saw-whet owl. Then you go out and walk the nets and look to see if anything's entangled in them. (It's hard to describe, but the nets are kind of... pouched, so that birds can fly in but then not get out.)

If there is, you detangle (which involves figuring out how they went IN so you can reverse it), and put the bird in a little bag. I suppose that in most cases you do the recording stuff out in the field, but we took the birds back to the cabin to process. The processing was done by the head bander, who handled the birds, and some volunteers. You have to train with someone who's a master bander for a number of years before you work up to being able to handle the birds yourself, so we didn't get to handle any, we just watched.

They process by weighing the birds, taking a certain wing measurement, checking for feather age (which helps to give at least a rough idea of the bird's age, because they molt on a certain schedule; this also involves shining a blacklight on the wings, and the utterly cool thing is that in the dark, the newer feathers are pink and the older feathers are blue), and checking for body fat (which helps to determine the health of the bird).

Sexing a bird that doesn't have any plumage difference between males and females is apparently extremely difficult, without DNA testing. I've mentioned this in relation to the redtail hawks. Males are smaller than females, but you kind of need to have them side by side for comparison; a single individual tells you nothing. And of course there are ranges amongst individuals. And, I think that when you start getting into birds as small as the saw-whet, there probably is not a lot of visual difference in size.

We were told that a number of years ago, someone did a formal study in which they trapped over 2000 saw-whet owls, took blood samples and DNA tested them to determine the sex, and then took measurements, and graphed them. So all of the banders have this graph to use, which plots the weight and wrist-to-tip wing measurement for the size ranges of males and females (with a section in the middle for "unknown", where a bird is juuuuust too big to be a male for sure, and juuuuuust too small to be a female for sure). The bander told us that the majority of owls they get are females, probably because they are playing the male call. (The females don't really have a call.)

So! Actually, while we were looking at the screech-owl and the great horned owl, the volunteers went out and walked the nets to find out if it was even worth going out. (Success varies, of course. Some nights you get few or none, I guess. The bander told us that 2007 was a banner year in which they processed 280+ owls at Drumlin, 62 in one night.) It was! So we went out and watched the process of detangling two saw-whets, which we took back to the cabin.

I was really unprepared for the UTTER ADORABLENESS of the saw-whets, let me tell you. (See above.) It's one thing to read that the owl is 7" long, but a completely different thing to see one.

(The saw-whet is not the smallest owl. The Elf Owl and the Pygmy Owl are both smaller. Saw-whets prey primarily on small rodents -- deer mice, shrews, voles -- and occasionally on smaller songbirds, frogs, and insects.)

After weighing and checking the wing measurement, I think this was the pre-blacklight checking the wing feathers for age:


(The owls molt fully every 3 years. So if all the feathers are new, it's probably a first-molt, 1-year-old owl. Older owls will show feathers of a variety of ages.)

All of these shots show the head bander holding the owls around the legs (and in some cases, around the neck as well).



Getting the band put on, a two-person job:


Doing that owl "I will turn my head almost completely around to keep an eye on things" trick:


Hanging out:



The bander told us that there's a pretty wide variation amongst individual owls, in terms of their disposition. Some of them are fairly phlegmatic about the whole thing, and seem almost curious about people. (You can tell, she said, by how long they hang out after the processing is done. Owls are then sort of perched on someone's arm, and allowed to fly away in their own time. She said that there have been some that have really stuck around for a long time, including one that she had to move up to her shoulder so she could get on with work, and that must have stayed with her, watching her process other owls, for a good 20 minutes or more.) Then there are owls that really want no parts of the whole thing, and let you know.

All three of the owls we had that evening were feisty owls. They didn't make any noise, except for clacking their beaks at us. It's kind of hard to take them seriously, although it should be noted that their little claws are very needly, and they can certainly get you with them. The bander had some puncture marks after this:


She was trying to show us what the owl's feet looked like, but the owl wasn't really cooperating, keeping its feet clenched up into little fists:


Still, head-stroking is calming:



And that was it! One female, and two unknowns for the night (one unknown was just a gram and a couple of milimeters from being a male; the other was just a scootch under being a female).

Unfortunately, Friday night was pretty rainy; maybe that had something to do with getting so few owls, maybe they just weren't flying? If so, smart. By the end of the evening, with worse rain forecast, the volunteers went out to roll up the nets for the night. (Had it been a clear night, they would have kept checking for quite a while.)

It was pretty awesome, and has really gotten me to thinking about whether it's something I'd like to try to learn to do. (The time committment -- which is mostly in Oct-Nov, I think -- makes me hesitate a little; but I'm thinking about it.) They were awfully compelling, and the study itself is kind of interesting.


( 19 comments — Leave a comment )
Oct. 26th, 2009 04:08 pm (UTC)
Oct. 26th, 2009 05:58 pm (UTC)
And yet, also an adorable little killing machine. (It's hard to believe.)
Oct. 26th, 2009 04:17 pm (UTC)
I love owls - especially the tiny ones.
Thanks for the pics!
Oct. 26th, 2009 05:57 pm (UTC)
You're welcome! :) I actually never knew that owls came in such tiny sizes before. I guess I hadn't thought about it, really.
Oct. 26th, 2009 05:45 pm (UTC)

That is one fucking cute owl.

The great horned owl is looking at you as if mortals bore him.
Oct. 26th, 2009 06:00 pm (UTC)
The great horned owl's look is somewhat undermined by all the little-baby noises he was making. It's hard to seem aloof and intimidating when you're trilling like a bitty little owlet.

The saw-whets are SO FUCKING CUTE I can't stand it. Geez, I think a vole would be about the same size!
Oct. 26th, 2009 09:23 pm (UTC)
So totally cute. Cutest of the cute! Those little toes/talons! :)

Thank you for posting these. *hugs*
Oct. 27th, 2009 01:34 am (UTC)
Very teeny toes that are so needle-sharp that the bander's puncture wounds weren't even bleeding! Awwww! ;-)
Oct. 27th, 2009 10:10 am (UTC)
Heh....such incisive little feet!

Oct. 26th, 2009 09:35 pm (UTC)
You have killed me with owl cuteness. I thought cross-little-owl-with-talons was the most adorable of the set, and then I saw the owl being petted, and I just turned to fudge. Are these on Facebook too?
Oct. 27th, 2009 01:37 am (UTC)
Those were my favorites, too. :) There were a couple of other cute pictures that just didn't come out. (Because the bander wasn't standing still, or the owl was moving, and it was hard to focus in that lighting.) I'm glad those ones came out well enough to post.

No, I haven't put them on FB. Despite *having* a FB account, I just don't use it. I refuuuuuuse to get sucked into it.
Oct. 26th, 2009 10:21 pm (UTC)
the newer feathers are pink and the older feathers are blue

That is totally cool! I did not know that! *files that away in the memory banks*

The saw-whet owls are really adorable. Did you get to hear the recorded calls?

Oh, I meant to mention: There's a woman on my friends list who works with raptors and owls at a wildlife center up in Canada: http://lyosha.livejournal.com/ Her journal is friends only, but if you comment that you want to be added to see the bird photos she'd probably add you. Her center just got in a beautiful juvenile bald eagle and she's posted some amazing photos of her.

Edited at 2009-10-26 10:24 pm (UTC)
Oct. 27th, 2009 02:14 am (UTC)
It has something to do with a chemical reaction, and as the feathers get older, the chemical breaks down and doesn't refract the light the same way, or something. Which is pretty cool in itself.

Man, I tell you, we could TOTALLY hear the recorded calls. They were blasting out at loudspeaker level. Although actually, they didn't carry as far in the forest as you'd think, because when we were at the one net location, you couldn't actually hear the calls being played at the other net location, but they were less than 5 minutes' walk apart.

Go here, and you can hear them online:


I read somewhere else that that almost mechanical-sounding repeated "toot!" can be repeated 100 times a minute. (When I first heard it out there being played, it sounded really unrealistic; but apparently not!)

I went and friended lyosha, and she just replied. Cool! I had faved a couple of her things on dA, and I don't know why I didn't have her watched on there, but I did that too.
Oct. 26th, 2009 10:59 pm (UTC)
Owls are so cute! Who knew!
Oct. 27th, 2009 02:18 am (UTC)
I know, right? I always thought of owls as being pretty big and kind of itimidating, like great horned owls. Or else barn owls, which frankly are freaky-looking. I thought the cute tiny owl in the Harry Potter movie was poetic license. (Apparently though it was based on the Scops owl, which is a European owl very similar to the screech-owl, but smaller.)
Oct. 27th, 2009 01:46 am (UTC)
Owls are *so* cute! I love the pictures.
Oct. 27th, 2009 02:19 am (UTC)
Thanks! I was really bowled over by their cuteness.
Oct. 27th, 2009 05:06 am (UTC)
Oh, I think I might die of cute.

The pic where the owl's looking into that gadget (looks like a magnifying glass, but fancy?) - Kiwi is fascinated by glass and reflective surfaces, and will lean over and stare into solar cells on a calculator, hand mirrors, etc.

Also, the balling-the-feet-into-fists thing happens whenever it's time for a talon trim. :D

Sorry if it's annoying when I compare her to the birds you're encountering - it's just exciting to me to see the "familiar" behavior in birds I don't know.
Oct. 27th, 2009 07:45 pm (UTC)
Thanks for the story & the photos. Let's face it, owls are *neat* (interesting, weird, paradoxical...etc.). I love hearing the Barred Owls in the spring -- they're one of the few who will nest pretty close to human habitation.
( 19 comments — Leave a comment )