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The call is a harsh noise like a black-headed gull.
Also included in this group is the Black-headed Gull species.
By lunchtime, the neighbourhood's black-headed gulls were at their daily gathering point.
Black-headed gulls occationally breed in the trees on the island.
The Island is nesting site for black-headed gulls and the little tern.
Black-Headed Gulls often stay close to the water when searching for food (bottom).
Without warning, a black-headed gull swooped down at them.
There's a black-headed gull that's made the Top Pool it's home.
In flight, the wings are broader and held flatter than those of black-headed gull.
Only a couple of Black-headed Gulls struggle on above the emerging winter wheat.
Black-headed gulls circled, spiralling skywards in a current of warm air.
A few black-headed gulls wheeled headily above the water.
Black-headed gulls are nervy fidgets, never quite prepared to settle.
Black-headed gulls have been seen sooner than expected with the hooded plumage they gain in spring.
A few Black-headed Gulls stand on the short-mown grass of a traffic island.
Foraging strategies of shelduck and black-headed gulls in an estuary.
Black-headed gulls with red legs and red bills loafed on small islands.
Nevertheless, this black-headed gull was still able to take advantage of its inelegant half-hover.
There is also a black-headed gull colony.
The black-headed gull is a bold and opportunistic feeder.
In the early 1950's he tracked the European black-headed gull, related species and other birds, like some remarkably social finches.
On Monday, the Black-headed Gull spent most of its time swimming and feeding.
The black-headed gull, to the city dwellers their cry is a reminder of glorious days at the seaside.
A Mediterranean gull was also present but, unfortunately, not the 4 great black-headed gulls which had been reported here or the four white pelicans.
Central pool had 3 green sandpipers, one greenshank, numbers of lapwing and black-headed gulls.
Spacing and foraging behaviour of black-headed gulls Larus ridibundus in an estuary.
The black-headed gull (Larus ridibundus) is a semi-altricial bird with a brood size of one to three siblings.
In captive black-headed gulls (Larus ridibundus L.), immature birds often win encounters with adults.
Black-headed Gull Larus ridibundus Recorded almost daily.
Black-headed gull (Larus ridibundus)
Feathers of Black-headed Gull (Larus ridibundus)
Kittiwake is rather larger than both species, being slightly larger than a Black-headed Gull (larus ridibundus) with a comparatively larger head.
Harrison mentions that the upper wing pattern resembles a Black-headed Gull (Larus ridibundus) which had been my impression of this bird when I saw it fly.
BLACK-HEADED GULL Larus ridibundus.
Other important bird species are the Grus grus, Charadrius alexandrinus, Larus ridibundus, Himantopus himantopus, Burhinus oedicnemus, Hoplopterus spinosus, Oenanthe cypriaca and Sylvia melanothorax.
Oriental Pratincole Glareola maldivarum 10 seen at Candaba marshes. 55. Black-headed Gull Larus ridibundus 1 seen near Bislig and 12 seen from the Tagbilaran to Cebu ferry. 56.
We show that in a large colony of Common Black-headed Gulls (Larus ridibundus) in an unstable aquatic habitat, adults that return to their natal colony tend to breed in close proximity to their natal site.