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The Ovenbird - looks like a thrush, but belongs to the warbler clan |
It's not unusual this time of year to come upon a particularly
visible Ovenbird. Often enough this species can be difficult to observe; however, come the breeding season, Ovenbirds become very
protective of their nests and young and will come out of hiding with the
smallest provocation. All it takes is for someone to come too close to their unseen
nests or to their fledged young and they will be scolded with volleys of sharp
warning calls. Sometimes both parents will pace back and
forth on an open branch, calling and nervously twitching side to side. That is
of course interesting behavior, but it doesn't qualify as a distraction
display.
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An Ovenbird parents gives sharp "smack calls" to warn off potential predators |
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The Ovenbird's nest - said to resemble a Dutch oven - built on the ground with a roof over it |
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The female Ovenbird incubating eggs in her cave-like nest |
The other day in the old woods I came upon a male Ovenbird that
was definitely upset by my presence. He did some of the expected scolding, but
mostly he engaged in a distraction display. He ran in a wide
circle around me –evidently trying to draw me away
from his unseen nest and/or young. Periodically as he ran he would relax his
pace, spread his tail, drop it to the
ground and then take a few quick steps. Sometimes he would augment his
performance by partially spreading his wing feathers and allowing them to droop. The aim of his display was to create the impression that he was
injured and would therefore be an easy target for a predator or for an intruder
that was otherwise bound to discover his nest.
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The male briefly Ovenbird sings from the forest floor |
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The distraction displays begins with intermittent tail dragging |
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Note the spread tail feathers and slightly drooping wings |
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He fearlessly walks up close to me |
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A fledgling Ovenbird perched on a low branch in the forest understory |
Though I've seen other birds perform similar distraction displays,
I don’t recall having seen the Ovenbird's version. I'm much more familiar with
the type put on by the Ruffed Grouse and the Killdeer. They most often feign
mortal injuries - reel around on the ground or limp about pathetically. The
mother grouse will also sometimes emit shrill alarm calls that make it sound like
she’s in agony. However, given the opportunity, not every species that is known for giving distraction
displays will perform one. I've had just as many grouse
mothers simply fly off into the brush and allow their young chicks to rely on
their own camouflage and their abilities to remain motionless until the danger
passes.
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Killdeer are famous for their flamboyant distraction displays |
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A mother Ruffed Grouse staggering around with tail spread and neck feathers "ruffed" out |
Once I had a hen turkey engage in a kind of distraction display right
in front of me. It consisted of her fearlessly running in circles around me,
while clucking madly. I was definitely distracted by her, and I never did see any of the poults that she was protcting. One other time, I inadvertently startled a turkey hen whose
reaction was to explosively take flight and abandon her clutch. The
young poults, which were probably only a few days old, all instinctively played
dead. 10 of them were strewn about the grassy trail –motionless and looking
like victims of a bloodless massacre. Their cryptic plumage did much to hide
them, but for sure, the effect would've worked better in taller grass. As I was
leaving, they began to make high pitch distress calls and soon the hen returned
to collect them.
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A very young turkey "poult" tries to disappear in the weeds |
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They remained absolutely motionless until I moved well away |
A couple of years ago I apparently got too close to the nest of a Hooded Warbler. The female Hooded performed a distraction display quite similar to that put on by the Ovenbird; she ran about in front of me, dragging her tail and trying her best to lure me away from her unseen nest. Again, this is another species that is not generally known for these kind of distraction displays and indeed in my many years of observing Hooded Warblers on their nesting grounds, this was the only one that ever behaved in that manner.
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The male Hooded Warbler issuing alarm calls near his nest |
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The female Hooded alarm call watching over her recently fledged brood |
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