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They nest on open ground or among rocks or less often in a burrow where one white egg is laid. The burrow is visited at night to minimise predation from large gulls. In late summer and autumn, most birds migrate into the Atlantic as far north as the south-western coasts of Great Britain and Ireland. They return to the Mediterranean in February.
Seabird mortality caused by long-line fisheries can be greatly reduced by techniques such as setting long-line bait at night, dying the bait blue, setting the bait underwater, increasing the amount of weight on lines and by using bird scarers, [104] and their deployment is increasingly required by many national fishing fleets.
Climate change may well affect populations of seabirds in the northern Atlantic. The most important demographic may be an increase in the sea surface temperature, which may have benefits for some northerly Atlantic puffin colonies. [58] Breeding success depends on ample supplies of food at the time of maximum demand, as the chick grows.
They nest in burrows and often give eerie contact calls on their night-time visits. They lay a single white egg. They lay a single white egg. The chicks of some species, notably short-tailed and sooty shearwaters, are subject to harvesting from their nest burrows for food, a practice known as muttonbirding , in Australia and New Zealand.
The Hebrides (Outer Hebrides in orange). The flora and fauna of the Outer Hebrides in northwest Scotland comprises a unique and diverse ecosystem.A long archipelago, set on the eastern shores of the Atlantic Ocean, it attracts a wide variety of seabirds, and thanks to the Gulf Stream a climate more mild than might be expected at this latitude.
A flock of barnacle geese during autumn migration Examples of long-distance bird migration routes. Bird migration is a seasonal movement of birds between breeding and wintering grounds that occurs twice a year.
The Swiss naturalist Conrad Gessner gave the northern gannet the name Anser bassanus or scoticus in the 16th century, and noted that the Scots called it a solendguse. [4] The former name was also used by the English naturalist Francis Willughby in the 17th century; the species was known to him from a colony in the Firth of Forth and from a stray bird that was found near Coleshill, Warwickshire.
Common tern Conservation status Least Concern (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Charadriiformes Family: Laridae Genus: Sterna Species: S. hirundo Binomial name Sterna hirundo Linnaeus, 1758 Breeding Resident Non-breeding Passage Vagrant (seasonality uncertain) Synonyms Sterna fluviatilis (Naumann, 1839) Twisted head The ...