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Dave Barnes | all galleries >> Antarctica >> Antarctic Peninsular > South Polar Skua (Stercorarius maccormicki) x Brown Skua (S.antarcticus lonnbergi) left & dark phase South Polar Skua right.
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14-DEC-2015

South Polar Skua (Stercorarius maccormicki) x Brown Skua (S.antarcticus lonnbergi) left & dark phase South Polar Skua right.

Whalers Bay, Deception Island, South Shetland, Antarctica.

The bird on the left was slightly larger and shows the creamy flank streaking not present on dark phase South Polar Skua. The right hand bird had lighter brown tips to the nape feathering but otherwise was all dark. 10% of the "South Polar" Skuas on Deception have been identified as to being hybrids.


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John Holmes 03-Mar-2016 10:24
I thought identification of Skuas was tough enough, without discovering that some of these might be hybrids, too !
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