The Sounds of Summer - The Killdeer
By Jeannie Marcure
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Photo by Jeannie Marcure |
In an effort to
improve my birding skills, I’ve recently been trying to
learn to identify birds by their calls. For someone
lacking musical training or talent, this is a daunting
task, so it makes sense that I’d have a special fondness
for any bird that makes this job easier by calling out
its name.
One of my local favorites that has this
obliging habit is the Killdeer and the repeated
‘Kill-deah” call often helps me spot this busy little
shorebird. Upon some investigation I learned that the
call is actually the origin of the bird’s name.
At 10 inches, the Killdeer is about the same size as a
Robin. This medium-sized shorebird has a short neck,
moderately long legs and a long tail and wings. The back
is brown and the throat and neck are white. The under
parts are white with two black chest bands. There is a
white band on the forehead with a black stripe above it
and a white eye stripe behind each eye. In flight an
orange rump and upper tail may be seen. Like other
plovers, the Killdeer has three forward facing toes and
a partially developed hind toe.
Here in the Flathead, the Killdeer is common and can
often be seen far from water. It is a voracious consumer
of all kinds of insects and most of the feeding is done
by sight while walking. Near water they are often seen
along the shore edge, probing the shallow mud for
insects and small invertebrates. Watch for the
characteristic bobbing as it walks along probing for
food. Killdeer are also commonly seen in agricultural
areas and on the lawns and parks of suburban and urban
areas.
Killdeer nests are made on an open scrape, often in
gravel, with little or no surrounding vegetation and
very little lining material. Here in the Flathead I’ve
found Killdeer nests in pastures, along lake shores and
near the driveway to my neighbor’s house. The three or
four tan and brown spotted eggs blend perfectly into the
surrounding habitat, making the nest almost invisible.
In fact you may not realize that you are near a nest
until one of the adults appears in front of you dragging
an apparently broken wing. The Killdeer will struggle
along in front of you as if it can barely walk, let
alone fly. One or both wings may drag pathetically, but
if you attempt to rescue the bird it will manage to stay
just a step or two ahead of you as it leads you farther
and farther from the nest. When the bird feels that you
are far enough away to no longer be a threat to the
nest, the wing will miraculously heal and the bird will
fly away. Another interesting behavior is sometimes
observed in pastures where the threat to nests is not
humans but horses or cows. In this instance the Killdeer
will fluff up and display its tail over its head to
appear larger and then make runs at the animals in an
attempt to drive them away from the nest.
Most newly hatched birds are altricial (blind, naked and
helpless upon hatching) and rely entirely on their
parents for food until they fledge. Killdeer babies,
however, like many other shorebirds, are precocial and
hatch covered with downy feathers and their eyes open.
As soon as these downy feathers dry, they start
scurrying around looking for food. This amazing behavior
is made possible by the fact that the eggs of precocial
birds such as the Killdeer are much larger. For example,
although the adult Robin and Killdeer are nearly the
same size, the Killdeer’s egg is twice as large. This
means that there is more food for the embryo and that it
can remain in the shell longer. Robins typically
incubate in about fourteen days while Killdeer
incubation takes around twenty-eight days. This means
that a newly hatched Killdeer chick is actually two
weeks ahead of a newly hatched Robin chick in
development. In appearance, the chick looks much like a
miniature version of the parents except that it only has
only one dark band on the chest rather than the
distinguishing two bands of the adults. Since they can’t
fly, newly hatched Killdeer chicks still need their
parents for protection and guidance and typically remain
with them for close to a month until they fledge.
www.birds.cornell.edu/AllAboutBirds/BirdGuide says
the Killdeer is one of the most successful shorebirds
because of its tolerance of people and human-modified
habitats. This close association with people, however,
does make them vulnerable to poisoning from pesticides
and collisions with cars and buildings.
This summer I hope you’ll take time from your busy
schedule to stop and listen for the Killdeer’s
distinctive call. I think it will quickly become one of
your favorite sounds of summer!
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