Red-throated Diver
Gavia stellata
Iceland, northern Scotland, Ireland,
Scandinavia, the Hebrides, Orkney's, Shetlands and the Murmansk region are all home to the red-throated diver. It is also found in Greenland and in the arctic
regions of North America, Breeding grounds are the edge of small but deep
pools, coastal lagoons and lakes. The nest is made of mosses like sphagnum and
of plant stems and is always placed near water. Paired birds often return to
the female lays usually two eggs, which both partners take turns incubating for
about 28 but sometimes as long as 36 days. Incubation starts as soon as the
first egg appears. If the clutch is lost, the female lays again. Red-throated
divers are migratory, although in the southern parts of their range they are
dispersive. European populations winter on the Atlantic coast as far south as
southern Spain, as well as on the North and Baltic, Mediterranean and Black
Seas. On migration, the birds occur as vagrants on inland waters, where,
however, they usually remain only a few days. The mainstay of the diet is sea
fish, such as herring, sprats and cod, but the species does take amphibians, crustaceans,
mollusks, aquatic insects and worms.
Size of egg
|
62.5-86.00x41.0-51.0 mm.
|
Length
|
53 to 61 cm. Male and female have
similar plumage.
|
Voice
|
A repeated, quacking ‘kwuck’ also a
high, thin wail
|
No comments:
Post a Comment