Monday 7 March 2016

Herring x Lesser Black-backed?

6th March 2016 - Topsham


Almost a Yellow-legged but not quite the real deal, here's some photos of hybrid gull from yesterday's session at Topsham Rec. This bird has been around at least since last November. Is it just me or does anyone else see these and, probably very sensibly, ignore them?

Hybrid Gull - 6/3/2016 Topsham.
 Fairly dark grey above and, while it never stood next to any other adult LWHG for comprison, it was clearly darker than argenteus and paler than graellsii; in fact I'd guess probably close to michahellis in shade or maybe a little darker. The main problem apparent here is the colour of the legs and feet, the tarsi appeared slightly yellowish or a sort of orange- or salmon-pink (it varied with angle and light levels) but at times the toes looked definitely pinkish. After checking photos of this bird taken last November the legs do look possibly a little more yellow now but a real 'mick' should be in full breeding condition in March with bright, deep yellow legs.

Hybrid Gull - 6/3/2016 Topsham

Hybrid Gull - 6/3/2016 Topsham

Hybrid Gull - 6/3/2016 Topsham

Hybrid Gull - 6/3/2016 Topsham

Hybrid Gull - 6/3/2016 Topsham

Hybrid Gull - 6/3/2016 Topsham
Leg colour aside, I'd still have serious doubts given the wing pattern which shows several differences from a classic michahellis. Very large mirror on P10 and large mirror on P9 are possible in michahellis (more so in Eastern birds?) but not common; thin (almost broken) W-shaped band on P5, obvious white 'moons' separating the black and grey on P5 - P7, both atypical and suggestive of HG genes.