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Feather discoloration

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Old Monday 8th July 2019, 23:01   #1
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Feather discoloration

Hello everyone!

Came across this female Ruby-throated a few days ago when it turned up in a camera trap I have on a nectar feeder.
Any thoughts on the white discoloration on top the head, and behind the gape?

Thanks in advance
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Old Thursday 11th July 2019, 16:01   #2
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Looks like a bit of leucism-an abnormal plumage condition caused by a genetic mutation that prevents pigment, particularly melanin, from being properly deposited on a bird's feathers.
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