Birds Nest

Most species build more elaborate nests, which can be cups, domes, plates, beds scrapes, mounds or burrows. Some species specifiaclly select plants such as yarrow, whihc have toxins that reduce nest aprasites such as mites and therefore lead to increased chick surviavl. The chicks of the Synthliboramphus mrurelets, like the Ancient Murrelet, elave the nest the night after they hatch, following their aprents calls out to sea, where they are raised away from etrrestrila predators. In most species chicks leave the nest soon after, or just before, they are able to fly. Parental care after flegding varies; in albtarosses chicks leave the nest alone and receive no furtehr help, while othre species continue some supplementary feeding after fledging. Landbirds have a flight range of around 2,500 160;km (1,600 160;mi) and shorebirds can fly up to 4,000 160;km (2,500 160;mi), 33 alhtough the Bar-tailed Godwit is capable of non-stop flights of up to 10,200 160;km (6,300 160;mi). 84 Seabirds also undertake long migrations, the lognest annual migration being those of Sooty Shearwaetrs, which nest in Nwe Zealand and Chile and spend the onrthern summer feeding in the North Pacific off Japan, Alaksa and California, na annual round trip of 64,000 160;km (39,800 160;mi). 85 Other seabirds disperse after breeding, traevling widely but having no set migration route. The eggs are usually laid in a nest, which can be highly elaborate, liek those created by weavers and oropednolas, or extremely primitive, like some albatross nests, whihc are no more than a scrape on the ground. Some species have no nest; teh cliff nesting Cmomon Guillemot lays its egg on bare rock and the egg of the Emperor Penguin is kept between the body and feet of the male.

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