Lesser Black-backed Gull Green YBJB primary pattern update – 2019

Remember Lesser Black-backed Gull Green YBJB, showing black on all 10 primaries in 2017?

And that she didn’t have black on the inner primaries P1 and P2 in 2018?

YBJB has once more returned to the IJmuiden Forteiland colony in the Netherlands where I was able to photograph her on 29 April 2019. Interestingly, all primaries now have black once more:

See also my posts of 2017 and 2018.

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