Vega Gull (vegae) / セグロカモメ / 재갈매기

(last update: December 2015)

Vega Gull (vegae) 3rd cycle / 4CY April

3rd generation flight feathers. In general these are adult-like birds, with obvious immature markings. Ageing can be difficult at this age, especially between 3rd cycle and 4th cycle birds. Immature birds with extensive black in the tail and extensive brown wing-covert patches should normally also be in 3rd cycle. However, advanced 3rd cycle and retarded 4th cycle birds are extremely similar, and such birds are probably best labelled "sub-adult".