Three eggs are laid. Their chicks hatch without down and so they rely totally on their parents for warmth, often for a period of two months before they can fly. Fledging may occur at any time from early June to late August, exceptionally to mid-October. The shag is a pursuit-diving seabird that feeds predominantly in benthic habitats.

A Shag typically lays 2 to 3 eggs per clutch. The eggs are laid at intervals of about 48 hours, and both parents share incubation duties. In favourable conditions, some pairs might attempt a second clutch if the first fails early in the season.

Females lay from 1 to 6 eggs (usually 3), usually begin incubation after laying the 2nd egg, and incubate them for 30 to 31 days. Hatchling European shags fledge at about 53 days, remain in the nest for 8 weeks after hatching, and are cared for by …

Lifecycle and body size information about Shag, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.

2023年7月12日 · The European Shag or Common Shag (Phalacrocorax aristotelis) is a species of cormorant. It breeds around the rocky coasts of western and southern Europe, southwest Asia, and north Africa, mainly wintering in its breeding range except for northernmost birds.

The shag lays eggs, like other cormorants, early in spring and is often fully nested in the middle of April. The eggs are 3-5 light bluish-coloured, each weighing about 51 grams or 1.8 oz. The nest is a heap made from seaweed and other things from …

variation in egg size and shape in the Shag (Phalacrocorax aristotelis) and it has been possible, by using birds of known age, to determine the effects of age and the date of laying on the size of eggs in both this species and the

Although Shag egg size varies considerably within broods (Coulson et al. 1969, Stokland and Amundsen 1988), the among-brood component ac- counted for 82.4% of the variation in egg volume in a sample of 381 eggs from 127 three-egg clutches for which the laying sequence was known. The volumes of eggs used in the experiment varied over a range

2011年7月7日 · At all times, however, slimmer build, shorter neck, smaller head, and faster wing-beats of Shag help identification. wingspan max.: size max.: incubation max.: fledging max.: eggs max.: Breeds in small deepenings, niches, grottoes and cornices in the high sheer and rocky areas of the Crimean coast.

The Shag is a sleek, medium-sized seabird with predominantly black plumage that shows a distinctive green sheen in sunlight. It has a long grey, hooked bill, a slender neck, and a small head with a steep forehead. Non-breeding plumage is far less glossy, with a duller black-brown all-over appearance and some white feathering on the throat.