Every year in late January
or early February, the country pauses to take in a spectacle like no other: Months
of preparation, training, late nights and early mornings, tough competition, and
a singular focus to survive. That’s right, it’s:
SUPERB OWL 2015!
Now the Superb Owl
celebrations were originally a way for t.v. comedian Stephen Colbert to avoid
the legal ire of the NFL by talking
about the “big game” without permission last year (relevant part starts
about 2min in). Now in good fun, National Audubon’s CEO David Yarnold got in on
it to talk about some of the issues with the Barred
Owl/Spotted Owl management in California.
Who manages you? Who manages you all!? |
And it’s a pretty fun idea.
You don’t need a great excuse to talk about owls, but this one is particularly
entertaining. In fact, National Audubon continued with the Superb Owl theme
this year with their Who’s Who
Owl Photo Gallery.
So let’s talk about owls! We
probably already know quite a bit- owls are some of the most popular types of
birds because of their unique behaviors and adaptations. Injured owls that
cannot be released into the wild are often used as educational resources for
school kids- RBAS hosted Mary
Ann Weber from Houston Audubon with her Great Horned Owl, Tskili, in 2013;
and our friends at The
Urban Interface have helped rehab
some of these guys to get them back in flying shape.
By the way, there was a
great interview on KAGS
with The Urban Interface about some of the latest efforts and fundraisers
they have going on to set up permanent facilities for bird rehab in the Brazos
valley!
So what do we know about
these birds? Well, we know that just about every feature on owls has one
purpose: to kill! These are some of the best hunters the birding world has to
offer. As primarily nocturnal hunters, owls’ eyes are disproportionally large
compared to their skull size. These big eyes can gather more light, contain sensitive
rod receptors, and have more efficient retina
neural integration mechanisms than just about any other bird.
Look at the eye on that one! Wow! From: http://floreo.com/2013/02/23/owls-are-flying-eyeballs/ |
To better triangulate the
position that a noise is coming from, owls’ ears are slightly off set from one
another! It’s a little bit of an oddity thinking about all of the other animals
that use hearing to hunt, but it makes very good sense. There’s a great deal
more info available on this HERE and from
this online book
[PDF warning].
Adapted from "Ecology and Conservation of Owls" Newton, Kavanagh, Olsen, and Taylor. 2002. |
Owls can also fly in near
silence. That’s a pretty unique adaptation. Think about Northern Cardinals or a
flock of Common Grackles going by… you can hear them before you see them!
That’s not of great utility to a hunter relying on stealth to get their dinner.
Owls use a coupe of different mechanisms to reduce their auditory presence:
1) A soft, fluffy under
belly helps dampen any sounds reflecting off of them
2) The trailing edge of
flight feathers is lightly serrated, gently breaking up the large air vortex
created by wings flapping into lots of little vortexes
3) The leading edge of the
wings has a bristly edge, helping to break up the air passing over the wing
Good view of the leading and trailing edges. By Kersti (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)] via Wikimedia Commons |
Alright, so what about
locally? What kind of owls do we have in the Brazos Valley? We can usually
depend on four different species of owls in this area: Barred, Eastern Screech,
Great-horned, and Barn.
Barred
A common and widespread
specie, Barred Owls typically like mature forests near water. Pete
Dunne describes them as: “A big, imposing, barrel-shaped, somber-eyed owl
that looks like it’s wearing a shabby stain-streaked coat with a closed fur
collar.” That pretty much sums it up. Their call is a classic amongst birders:
“Who cooks for you, who cooks for you all!” If you head out around dawn or dusk
to Lick Creek Park, you’re nearly certain to hear them chatting with one another.
Barred Owl in Lick Creek Park |
Eastern Screech
Our smallest resident owl,
these birds are surprisingly common if you know where (and when) to look. It
said that there is a good likelihood of an Eastern Screech in any modest sized
neighborhood woodlot. The RBAS Great Texas Birding Classic Team started our Big
Sit off with an Eastern Screech in Brison Park last year! Heck, you can even
put up a Screech Owl box and have them roost in your backyard. Despite their
name, Eastern Screeches have an ethereal, trembling whistle or slightly nasal
whinny. They are most vocal in the late winter and spring at dawn and dusk, so
check out your local park or woodlot and have a listen. [I don't have a picture- sorry!]
Great Horned
This is the owl that no one
likes. Well, no other animals like. An expression of “sleepy malice – or just
plain malice”, Great Horneds are a tremendous killing machine. Their diet
ranges from small mammals (mice, rabbits, skunks etc), insects, and other
birds, like Osprey, Peregrine Falcons, and other owls! They are awesome in the
truest sense of the word. That’s why if you hear a group of crows sounding
agitated and swooping around a tree, they have probably found a roosting Great
Horned! These birds are active at dawn and dusk, as well as overnight and
sometimes in the day, and are found pretty much anywhere Red-tailed Hawks are
found. I’ve usually encountered these out a little from town- just on the edge
as you get into some open areas of the county.
Great Horned Owl |
Barn
A dapper owl, Barns
typically live out in the country where it can cruise the fields and flatlands
looking for small mammals, amphibians, and insects. Although they like living
in quiet (abandoned) structures, they are known to nest in backyard boxes made
for them. Typically difficult to find, they can sometimes be easiest to see
just by driving around the countryside. Barns will use the light from your
headlights to spot rodents on the side of the road. Pretty clever! But that
also puts them at risk for accidents. A scary, unnerving screech/yell/shriek,
this isn’t the type of owl call you’ll really enjoy hearing. [I have a picture, but it's super extra blurry]
So while you’re enjoying
that other competition today, remember to have a look (or listen) in the late
evenings or early morning! You might just find one of our Superb Owl friends!
Love it! Informative and funny. And: I really would love to replace my failing eyes with a pair of owl lookers. Marisa
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