lunes, 26 de septiembre de 2011

miércoles, 14 de septiembre de 2011

Presumed Heuglin's in Tampere

A bunch of photos showing a presumed 2cy Heuglin's Gull, Larus (fuscus) heuglini. Pictures courtesy of Petri Salo and Hannu Koskinen.

jueves, 8 de septiembre de 2011

Larus fuscus fuscus.

Baltic Gull, Larus fuscus fuscus. 2cy?

This Baltic shows an amazing state of moult in primaries:

Highly worn feathers -- P1-P4 and P9.
Moderate worn feathers -- P5-P8 and P10.

Note that P10 seems to be 2nd generation, unlike P1-P4 (3rd generation?). This pattern indicates two irregular moult waves (most probably in winter and spring).

lunes, 5 de septiembre de 2011

Larus fuscus fuscus juvenile

Baltic Gull, Larus fuscus fuscus, juvenile. August 2. Note specially the plain and simple pattern on wing coverts and tertials. Dark overall appearance and thin bill.