Larus cachinnans

(last update: February 16, 2013)

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

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cachinnans plumages

Larus cachinnans 1CY-2CY PLG DN-27553 December 2011 - March 2012, Madrid, Spain & November 2012, Utrecht, the Netherlands.

PLG GDANSK DN 27553 metal ring.
Ringing data
Species: Caspian Gull colony (Larus cachinnans kolonia)
Sex, age: unknown, nestling
Status: not applicable (bird is a pullus)
Condition: [8] alive and probably healthy - observed or released by ringer
Date, time, accur.: 26/05/2011, 0:0, date accurate
Place: [PL OE] ZB.l<OZIELNO,PACZKOW, OPOLSKIE, POLAND
Coordinates: 50°29'00.0"; 16°58'00.0" (5048333300; 1686666700)
Accuracy of coord.: somewhere inthe circle with radius 5 km
Ringer: Jacek Betleja, Jakub Szymczak

Recovery data
Verification of ring: [0] ring not verified
Date, time, accur.: 09/O3/2012, 0:0, date accurate
Place: [ES 53] Vertedero de Pinto, Madrid, MADRID, SPAIN
Coordinates: 40°15'41.6"; -3°38'00.9" (4026155600; -363358300)
Accuracy of coord.; accurate to the given coordinates
Species: Caspian Gull (Larus cachinnans)
Sex, age: 2CY,
Status:
Condition: [7] alive and probably healthy - observed or released
Circumstances: [28] ring number of metal ring read
Finder: Javier Marchamalo, Delfin Gonzalez
Distance: 1958 km, Direction: 242°, Elapsed time: 288 days

Ringed as pullus on May 26 2011 at Kozielno Paczkow Opolskie, Poland. Ringed as pullus in a mixed colony, could turn out to be a hybrid between cachinnans x argentatus.

below: cachinnans 1CY PLG DN-27553 December 30 2011, Landfill VRSU de Colmenar Viejo, Madrid. Picture: Delfín González.

No tertials, but several inner wing-coverts have been included in post-juvenile moult last autumn. Brown underwing.

below: cachinnans 2CY PLG DN-27553 January 22 2012, Landfill VRSU de Colmenar Viejo, Madrid. Picture: Delfín González.

below: cachinnans 2CY PLG DN-27553 March 04 2011, Landfill VRSU de Colmenar Viejo, Madrid. Picture: Delfín González.

below: cachinnans 2CY PLG DN-27553November 20 2012, Utrecht, the Netherlands. Picture: Herman Bouman.

2nd gen flight feathers. Note palish iris, angular head and strong gonys angle.