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Eurasian blue tits use songs and calls throughout the year. [29] Songs are mostly used in late winter and spring to defend the territory or to attract mates. Calls are used for multiple reasons. [30] Communication with other Eurasian blue tits is the most important motivation for the use of calls.
Tits are cavity-nesting birds, typically using trees, although Pseudopodoces [12] builds a nest on the ground. Most tree-nesting tits excavate their nests, [13] and clutch sizes are generally large for altricial birds, ranging from usually two eggs in the rufous-vented tit of the Himalayas to as many as 10 to 14 in the blue tit of Europe.
A blue tit feeding on a suet cake A ring-shaped suet cake being formed in a mold, by adding melted fat to a mix of seeds. Suet cakes or fat balls are nutritional supplements for wild birds used in bird feeders. [1] They commonly consist of sunflower seeds and wheat or oat flakes mixed with suet, pork fat, or coconut oil.
An adult Eurasian blue tit collecting the fecal sac of a chick (just hatched, still naked and blind) to ensure the cleanliness of their nest. A fecal sac (also spelled faecal sac) is a mucous membrane, generally white or clear with a dark end, [1] that surrounds the feces of some species of nestling birds. [2]
The blue-footed booby is a specialized fish eater, feeding on small schooling fish such as sardines, anchovies, mackerel, and flying fish. It will also take squid and offal. The blue-footed booby hunts by diving into the ocean after prey, sometimes from a great height, and can also swim underwater in pursuit of its prey.
The African blue tit ranges from 11–12 cm (4.3–4.7 in) in size. [3] It is a small, sharp-billed, compact tit.The nominate race has a forehead and supercilium to centre of nape white, crown deep glossy blue, becoming blackish on the neck, with a blue dorsal and yellow ventral body.
Aristotle recognised three species: the long-tailed tit, the great tit, and the Eurasian blue tit. [12] The pygmy bushtit is placed in this family because it moves around in flocks and its nests resemble the long-tailed tits', but information about it is so scanty that the placement is only provisional. [2]
Great tit in Sweden, winter 2016. The great tit (Parus major) is a small passerine bird in the tit family Paridae. It is a widespread and common species throughout Europe, the Middle East, Central Asia and east across the Palearctic to the Amur River, south to parts of North Africa where it is generally resident in any sort of woodland; most great tits do not migrate except in extremely harsh ...