Thursday, 15 August 2019

Juvenile Caspian Gull

Another good session at Shawell after work tonight.

Juvenile/first-winter Mediterranean Gull, a new juvenile Caspian Gull and 13 colour-rings read.

The photo below shows some nice features that aid identification of juvenile Caspian Gull. A plain pale head with just a slight darkening around the eyes (not a mask); a long and fairly thin bill (this one had an obviously long bill, but many juvenile Casps don't have exceptionally long bills); very plain brown coverts with its greater coverts being very dark; already replacing some scapulars with grey second generation feathers; a whitish breast and belly and spindly legs.

Juvenile Caspian Gull (centre), Shawell A5 Lagoons, August 15th 2019

Here a splendid video of the Caspian Gull (change to HD quality if not automatically done):

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