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adult heuglini - Buzun 2002 (3)

Posted: Wed Dec 02, 2009 7:57 pm
by marsmuusse
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Figure 11, 12, 13, 14: Buzun described for heuglini P10 with a white based, visible from below. He estimated for Russian birds 70-75%. In the Moerdijk colony, we estimated 1-3% having a white base. But many have silvery-grey, pale grey bases to the primaries from below.
Figures 11, 12, 13, 14 are examples (11cy orange AZ, orange B4, mint P0, mint V1) for these 1-3% birds from Moerdijk, showing white based P10.
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