November 12th, 2010, 04:04 PM
Something not right?
This delawarensis has some features not normally associated with that species. Which are they in your opinion, and what are the alternatives?
Last edited by JanJ; November 12th, 2010 at 04:06 PM.
November 12th, 2010, 04:11 PM
Something not right, indeed.....but I'll not give the game away.
November 12th, 2010, 05:23 PM
Thumbnails will not open for me .
November 12th, 2010, 06:04 PM
November 12th, 2010, 06:05 PM
I'm not ashamed to say I had to look in Collins to see what was wrong but that's good for me, I get to learn. Lack of dark terminal band on tail, lack of dark secondary bar. I'm certain larophiles (laridophiles?) will see more.
November 12th, 2010, 08:19 PM
First-summer moulting to second-winter, which is reasonable for a September pic. New 2nd-w secondaries and primaries, the outer few primaries still growing in; old 1st-s secondary and primary coverts. New tail feathers (so only subterminal black is OK, I think?). I fear I don't know the moult sequence well enough to know if this feather succession is out of order in any way. Legs a bit bright pink for its age, perhaps?
November 12th, 2010, 09:14 PM
The greater coverts? Old or new, they should be a pale grey and not a dusty brown.
November 12th, 2010, 09:18 PM
And the bill looks a little more elongated and chunky than one might expect. That gonys is rather prominent.
Although bill size and structure can be surprisingly variable (within species limits of course), if the Common Gulls in my local roost are anything to go by.
Rob H (again)
November 12th, 2010, 10:10 PM
Originally Posted by rshill1973
November 13th, 2010, 08:16 AM
Methinks a perusal of the Smithsonianus section of Olsen and Larsson (pp239-253) may point some readers in the right direction...especially photo no 314.