Bird Families

Lesser Black Backed Gull (Larus fuscus) Description

Pin
Send
Share
Send
Send


On the Atlantic coast of Europe, the Lesser Black-Backed Gull, scientific Larus fuscus is a large herd breed sporadically. It is a winter bird, that resides from the British Isles to South Africa. This is likely a winter visitor to the North American east coast, probably from Iceland's breeding population.

Description

Less black-backed gulls than European herring cheeks. The hearing loss of the herring gull / low black-backed gull complex is very complex; Various authorities recognize between two and eight species.

This group of Lesser Black Backed Gull has a ring species distribution around the Northern Hemisphere.

The differences between the adjacent forms of this ring are fairly small, but as the circuit ends, the end members, herring gulls, and less black-backed gulls are clearly separate species.

The lowest black-backed gulls measure 51-64 cm (20-25 in) across the wings, 124-150 cm (49-59 in), and weigh 452-11100 grams (0.996-2.425 lbs), averaging nominal averages for other.

Men are slightly smaller than the two subspecies, males, with an average weight of 120 grams (1.5 ll), slightly larger than females, on average 8 grams (1.561 lbs).

In standard measurements, the wing cord is 38 to 45 cm (15 to 18 inches), the bill is 4.2 to 5.8 cm (1.7 to 2.3 inches), and the tarsus 5.2 to 6.9 cm (2.0 to 2.7 in).

A delusional species is the great black-backed gull. Less common are many small birds, small white “mirrors” in yellow and wings tips instead of thinly built pink feet.

The adult Lesser Black-Backed Gull has black or dark gray wings (depending on the color) and the back.

The bill of the encourages feeding young pecs, where yellowish red spots (see Fixed verb format). The head is grayer in winter than in winter, distinct from the great black-backed gulls.

The annual molt for adults starts from May to August and is not complete on some birds until November.

The partial reproductive meltdown of the Lesser Black-Backed Gull occurs between January and April.

The young Lesser Black-Backed Gull bird has a blackish-brown upper part and a wingspan. It takes them four years to reach maturity.

Detection from juvenile herring gulls is more easily accomplished by more visually dark (discontinuous) partial feathers.

Their call is a “ridiculous” cry like herring cheek, but with a pretty deep pitch.

Breeding

The Lesser Black-Backed Gull species colonize on the coast and lake, creating a lined nest on land or on a sheet. Usually, three eggs are given. In some cities, the species often nest in the urban environment in conjunction with herring flowers.

Upbringing

Most of these larvae are ubiquitous, such as cheeks, and eat fish, insects, crustaceans, worms, starfish, molasses, seeds, berries, small mammals, eggs, small birds, rats, scraps, offal, and carrion.

Watch the video: Gaviota sombría Larus fuscus Lesser Black-backed Gull (May 2021).

Pin
Send
Share
Send
Send