I thank Ian for sending me the photos below and the following opinion of Detlef Gruber:
1. Jizz very atypical for YLGU - which are normally more slender, etc., whereas argentatus (including "omissus") are of quite heavier build than Herring Gulls of the subspecies smithsonianus and argenteus.
2. The head is too round, whereas YLGUs are more often flat crowned, not "domed" as assumed in the article [above] by Cornell et al.
3. The bill is too short cf. YLGU which have long, thinner bills.
4. The color and extent of the red gonys spot and the light yellow legs are atypical for Mediterranean YLGU in breeding plumage, which this bird evidently has, from its lack of head streaking.
5. The subspecies argentatus, unlike argenteus or smithsonianus, has a red orbital ring and often much darker upperparts, resembling YLGU. (The Halifax bird, however, did not seem notably darker than accompanying HEGUs.)
6. The large white tongue visible on the underside of p10 "is never shown" on L. c. michahellis, "rarely" on L.c. cachinnans, "sometimes" on L. a. argenteus, but "very often" on L. a. argentatus including omissus.
7. The wing extension beyond the tail is too short for YLGU.
8. The legs are too short. Compare the equal length of tarsus and middle
toe; in YLGU the tarsus is much longer.
The photos were
taken 11 Feb. 1995, but the bird was never found again.
The images that I received from Ian McLaren were rather dim and had a greenish cast. So I used Adobe Photoshop and Graphic Converter to manipulate the images.
As always, click on the thumbnail to load the full image.
|"best" color balance according to Adobe Photoshop||my sense of a good balance||my sense of a good balance|
|my sense of a good balance, photo 2||original of photo 1||original of photo 2|
since December 15, 2000 (Thanks WebCounter!)