Larus cachinnans

(last update: February 16, 2013)

Coordinator:
Peter Adriaens (Belgium)
Ies Meulmeester (Netherlands)

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cachinnans plumages

Larus cachinnans 2cy-4cy PHHA January 2012 - February 2014, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer & Walther Leers.

Ringed yellow PHHA and metal DN27215, ringed as pullus on May 26 2011 at Kozielno Paczkow Opolskie Poland (50,48 19,97). Spent winter 2012 (January-March) and winter 2012-2013 (November-March) at this location.

below: cachinnans 2cy PHHA January 28 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

Many coverts included in post-juvenile moult.

below: cachinnans 2cy PHHA February 11 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Geoffrey Raison.

below: cachinnans 2cy PHHA February 07 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

Pale underwing.

below: cachinnans 2cy PHHA March 14 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

No tertials, but inner GC, inner MC, inner & central LLC and many LC included in post-juvenile moult.

below: cachinnans 2cy PHHA April 30 2012, Sambre - lock complex Malonne, Namur, Belgium.

Complete moult started, new feathers growing in, see MC.

below: cachinnans 2cy PHHA November 14 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

2W bird, with 2nd gen flight feathers. Note single white tail feather.

below: cachinnans 2cy PHHA November 23 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

2W bird, with 2nd gen flight feathers. Note single white tail feather.

below: cachinnans 2cy PHHA December 28 2012, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

2W bird. No complete grey saddle.

below: cachinnans 3cy PHHA January 10 2013, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

Chasing the Black-headeds, that's fun.

below: cachinnans 3cy PHHA January 16 2013, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

Note grey median coverts, replaced again in partial autumn moult.

below: cachinnans 3cy PHHA March 07 2013, Sambre - lock complex Malonne, Namur, Belgium. Picture: Walther Leers.

In many ways a classic 2W bird, but note absence of mirror on P10 (while this is rather common in this plumage in Caspian Gull). Scapular moult progresses at low pace.

below: cachinnans 3cy PHHA March 14 2013, Sambre - lock complex Malonne, Namur, Belgium. Picture: Alain de Broyer.

Note grey median coverts, replaced again in partial autumn moult.

below: cachinnans 3cy PHHA December 02 2013, Sambre - lock complex Malonne, Namur, Belgium. Picture: Walther Leers.

Now with large mirrors, and already deep tongue on P10; classic bird.

below: cachinnans 4cy PHHA January 07 2014, Sambre - lock complex Malonne, Namur, Belgium. Picture: Walther Leers.

Still present.

below: cachinnans 4cy PHHA February 17 2014, Mornomont Namur, Belgium. Picture: Walther Leers.

Large white primary tips and large mirror on P10. Still some immature coverts.