4CY Presumed hybrid Lesser Black-backed Gull x Yellow-legged Gull Green Y.BVA – 2014/2015

Images of 4th-calendar year presumed hybrid Lesser Black-backed Gull x Yellow-legged Gull Larus michahellis x Larus fuscus graellsii (Dutch intergrade), ringed this year as Green YBVA in the gull colony of IJmuiden (Forteiland), the Netherlands.

It was seen breeding and producing 2 chicks which it unfortunately lost due to predation. It was also present during much of the breeding season of 2014, taking up the territory in which it built its nest this year.

The colony is home to 2 other breeding (presumed) Lesser Black-backed Gull x Yellow-legged Gull hybrids (ringed as Green YAHH and YBAM) and it is more than likely that YBVA is an offspring of either of these birds.

May / June 2015

hybride-KMxGP-20150504-3

hybride-KMxGP-20150511-2

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hybride-KMxGP-20150511-1

Above: with adult Lesser Black-backed Gulls Larus fuscus graellsii (Dutch intergrade)

G-YBVA-20150529-1

G-YBVA-20150529-3

G-YBVA-20150529-4

G-YBVA-20150529-2

G-YBVA-20150529-5

G-YBVA-20150629-1

G-YBVA-20150629-2

June / July 2014

Images from 2014 as a 3rd-calendar year.

hybride-KMxGP-20140602-1

hybride-KMxGP-20140602-2

hybride-KMxGP-20140602-4

hybride-KMxGP-20140602-3

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