Larus cachinnans

(last update: February 16, 2013)

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cachinnans in Poland

cachinnans in Holland

cachinnans rings

cachinnans plumages

1cy August
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2cy January
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3cy January
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3cy July
3cy August
3cy September
3cy October
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sub-adult January
sub-adult February
sub-adult March
sub-adult April
sub-adult May
sub-adult June
sub-adult July
sub-adult August
sub-adult September
sub-adult October
sub-adult November
sub-adult December

adult January
adult February
adult March
adult April
adult May
adult June
adult July
adult August
adult September
adult October
adult November
adult December

Larus argentatus sensu lato P406 adult, April 20 2012 & January - February 2013, Wytyckie Lake - Urszulin, Poland & Amsterdam & Barneveld, the Netherlands.

Green P406 and metal DN27306. Bird ringed as breeding adult male at the nest on April 20 2012 at Urszulin Lubelskie, Poland. For 2012, breeding location of 150 pairs cachinnans, of which 54 adults ringed and 158 pulli in 2012 (pers comm. Łukasz Bednarz). It is assumed that this population does not consist of pure cachinnans only; some hybridisation may occur, therefore the ringing centre in Poland decided to label difficult birds as "Larus argentatus sensu lato". Still bulk of the breeding birds in Wytyckie Lake show features of cachinnans.

Please visit Łukasz's BLOG for beautiful drawings and up-to-date gull news from eastern Poland: Wildlife art and illustration

below: Larus argentatus sensu lato P406 adult, April 20 2012, Wytyckie Lake - Urszulin, Poland. Picture: Łukasz Bednarz ringing team.

Breeding bird trapped at the nest. Adult male, a bulky beast, and therefore in proportions resembling argentatus; but probably within limits for pure cachinnans. Head shape in adult male cachinnans highly variable, but especially in this bird suggesting influence of argentatus.
Limited speckling in iris. Red orbital ring and gape. No red on upper mandible; black on the upper and black on the lower mandible. Pale yellow legs.
Deep white tongue on P10, broken black band on P5; no black spot on P4. P1 still present, PMS=0.

below: Larus argentatus sensu lato P406 adult, February 18 2013, Barneveld, the Netherlands. Picture: Herman Bouman.

Albatros pose when aggitated.

below: Larus argentatus sensu lato P406 adult, January 06 2013, Amsterdam, the Netherlands. Picture: E. Schuller.

below: Larus argentatus sensu lato P406 adult, January 08 2013, Barneveld, the Netherlands. Picture: Maarten van Kleinwee.

Note angular head shape.