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Shiny cowbird? NJ

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Old Monday 23rd April 2018, 01:55   #1
xyz99
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Shiny cowbird? NJ

This looks like a shiny cowbird, but it's in Northern NJ, way out of range. Taken today.
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Old Monday 23rd April 2018, 02:05   #2
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Female Brown-headed Cowbird.
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Old Monday 23rd April 2018, 02:07   #3
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Old Monday 23rd April 2018, 02:53   #4
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I saw one of them today flying around with a bunch of Common Grackles.
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Old Monday 23rd April 2018, 12:30   #5
xyz99
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I saw one of them today flying around with a bunch of Common Grackles.
This one was with Common Grackles, too.
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Old Monday 23rd April 2018, 13:44   #6
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I wonder what the explanation for that is?

Bob
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Old Monday 23rd April 2018, 14:32   #7
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I wonder what the explanation for that is?

Bob
Protection while feeding? It is probably a little early to spend the time looking for nests in which to dump eggs ...

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Old Monday 23rd April 2018, 15:36   #8
ceasar
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Yes Niels, it was while they were feeding.

Common Grackles are a particularly mean bird.

I remember watching them destroy the unhatched eggs in a Mourning Dove's nest in a Silver Maple tree just off my deck a few years back. I'm not sure if a Cowbird's eggs would last very long in their nests.

Their own nests were in the Arbor Vitae around my lawn and they drove other birds out of it and took it over. The result was that we had an infliction of Common Grackles that year. The next year we had to remove a row of Arbor Vitae to have a drainage line repaired and they haven't returned in any big numbers since then.

Can't say I miss them much but I did get a some of great photos of the iridescence on a couple of them when the light was right.

Bob

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Old Monday 23rd April 2018, 15:41   #9
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I wonder what the explanation for that is?

Bob
They parasitize Common Grackles on occasion, though an internet search suggests it is not common. So the bird may have been raised by Grackles and "thinks it is one."

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Old Monday 23rd April 2018, 17:10   #10
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Interesting bit of info, I had no idea :)
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