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The
Burrowing Owl
The burrowing owl really gets
around. It may only be about ten inches tall and more
anatomically designed for walking than for flying, but it has a
very wide range. You'll find it in a number of the prairie areas
of the world. In southwest Canada, western USA and Florida, for
instance. As well as in Central and South America.
Did you know...the burrowing owl lives in a hole in the
ground that's been vacated by a prairie dog or some other
mammal...or in the hole of a gopher tortoise that's still
occupying the premises. That's right, the burrowing owl has a
symbiotic relationship with the gopher tortoise. "And
that's not all, folks!" There's every possibility that a
rattlesnake may be "hangin' out" with the others. And
a frog. It certainly surprised me, since burrowing owls eat
them, but it's been reported that frogs have also been found in
gopher tortoise holes.
All of these animals seem to
benefit from the ability of the tortoise to dig a great hole. A
hole that slopes down to a depth of 10 to 12 inches and is about
a foot-and-a-half wide. It digs its hole to escape the sun's
heat, of course. And that, by the way, is the attraction for the
rattlesnake. You see, rattlesnakes just can't abide heat. No
snakes can, in fact. If a snake gets too much sun, too fast, it
will die in a matter of 20 or 30 minutes. This has to do with
its need to keep its body temperature the same as the
temperature of the air. If the day heats up too fast, the
snake's slow metabolism can't catch up, just can't adjust in
time...and the snake dies.
A burrowing owl doesn't have that problem, however. It's a
warm-blooded animal that can take heat, or leave it. It's a very
alert bird that does its hunting at night. Eating insects of all
kinds, small rodents, small lizards and other reptiles. During
the day, you'll see it standing up on the mound (made by the
gopher tortoise) looking around. It reminds me of the wonderful
way prairie dogs stand on the dirt mounds next to their holes.
Both the burrowing owl and prairie dog use the mound as a
sentinel post, of course. It's their high ground to see if
danger is coming.
Now here's the key to this Did You Know?
The alarm signal of a burrowing owl sounds almost exactly like
the rattle of a rattlesnake. Amazing, isn't it? How could this
have possibly developed? Did the owl somehow figure out that
when a rattlesnake rattled its rattle, animals backed away? Is
there any way that the burrowing owl could even understand what
is and what isn't a threat to a rattlesnake? Just how did a
burrowing owl figure out that if it mimics the sound of a
rattlesnake it can confuse a potential predator and keep it away
from the hole?
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