Adult Lesser Black-backed Gull Green YBJB with black on all primaries – 20170508

An example of a Lesser Black-backed Gull with black on all 10 primaries. Quite unusual to see because black in adults normally only reaches down to P4/P3 and in some to P2. For me at least it’s only my second example in my collection so far.

It seems to be the standard pattern for YBJB because it was also present in 2013 when it was ringed as an adult.

Green YBJB is a female and was incubating 2 eggs on the day these photos were taken: 8 May 2017, IJmuiden Forteiland, the Netherlands.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.