Larus cachinnans

(last update: February 16, 2013)

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cachinnans in Poland

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cachinnans plumages

1cy August
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2cy January
2cy February
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2cy July
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3cy January
3cy February
3cy March
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3cy May
3cy June
3cy July
3cy August
3cy September
3cy October
3cy November
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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 cachinnans 1P34 adult, May 2013, Wytyckie Lake & April 2014, Zastów Karczmiski, Poland. Picture: Łukasz Bednarz ringing team.

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

For 2012, breeding location of 150 pairs cachinnans, of which 54 adults ringed and 158 pulli in 2012 (pers comm. Łukasz Bednarz).

below: Larus cachinnans 1P34 adult, May 15 2013, Wytyckie Lake - Urszulin, Poland. Picture: Łukasz Bednarz ringing team.

Breeding bird trapped at the nest. Adult, with dense speckling in iris. Red orbital ring and gape. No red on upper mandible; black on the upper and faint black on the lower mandible. Pink legs.
Deep white tongue on P10 (breaking the medial band, so merged with white tip = thayeri pattern, also on P9), and broken black band on P5; no black spot on P4. P1-P2 dropped; PMS=2.

below: Larus cachinnans 1P34 adult, April 11 2014, Zastów Karczmiski, Poland. Picture: Łukasz Bednarz ringing team.

Excellent find in the Zastów Karczmiski colony. Birds like this one illustrate there is some migration between these two colonies, which may help explain why taxa other than cachinnans (i.e. argentatus and michahellis) are found in the Wytyckie Lake if the migration works two ways (v.v.).