José Antonio Cañal
3 views | +0 today
Follow
Your new post is loading...
Your new post is loading...
Rescooped by José Antonio García Cañal from Gull ID
Scoop.it!

Identification of North American Herring Gull (Philippe J. Dubois, Biritish Birds - Registration Required)

The North American subspecies of the Herring Gull Larus argentatus smithsonianus has been recorded in Europe on a number of occasions in recent years. Immatures are distinguishable from those of European races (nominate argentatus and argenteus), in particular having a different pattern to both the tail and the rump.


Via Pete Mella
more...
No comment yet.
Rescooped by José Antonio García Cañal from Gull ID
Scoop.it!

Status of the form barabensis within the ‘Larus argentatus– cachinnans–fuscus complex (Evgeniy N. Panov & Dmitriy G. Monzikov, British Birds - Requires Registration)

Between 19th July and 1st August 1997, at the Chany Lakes in southwestern Siberia, data were collected on phenotype features and behaviour of the local populations of gulls Larus belonging to the taxonomically vague form barabensis.These were compared with data from the literature and museum material on the morphological, oological and behavioural characters of L. c. cachinnans and L. (fuscus?) heuglini, as well as those of some other related gull forms.


Via Pete Mella
more...
No comment yet.
Rescooped by José Antonio García Cañal from Gull ID
Scoop.it!

Status of the form barabensis within the ‘Larus argentatus– cachinnans–fuscus complex (Evgeniy N. Panov & Dmitriy G. Monzikov, British Birds - Requires Registration)

Between 19th July and 1st August 1997, at the Chany Lakes in southwestern Siberia, data were collected on phenotype features and behaviour of the local populations of gulls Larus belonging to the taxonomically vague form barabensis.These were compared with data from the literature and museum material on the morphological, oological and behavioural characters of L. c. cachinnans and L. (fuscus?) heuglini, as well as those of some other related gull forms.


Via Pete Mella
more...
No comment yet.