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In weight, the family ranges from 5 to 49 g (0.18 to 1.73 oz); this contracts to 7 to 29 g (0.25 to 1.02 oz) when the three atypical genera are removed. The majority of the variation within the family is in plumage, and particularly colour. [5] The bills of the tits are generally short, varying between stout and fine, depending on diet. The ...
The blue-footed booby (Sula nebouxii) is a marine bird native to subtropical and tropical regions of the eastern Pacific Ocean. It is one of six species of the genus Sula – known as boobies. It is easily recognizable by its distinctive bright blue feet, which is a sexually selected trait and a product of their diet. Males display their feet ...
Eggs are 14–18 mm (0.55–0.71 in) long and 10.7–13.5 mm (0.42–0.53 in) wide. Egg size appears to depend mostly on the size of individual females and secondarily on habitat, with smaller eggs found at higher altitudes. The clutch's total weight can be 1.5 times as heavy as the female bird. [22] Juvenile in Pimlico, London
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 ...
When perched, this bird appears all black. However, in flight, a white rump and flight feathers becomes visible. Its morphology is comparable to that of other harriers, with narrow wings, a slim body, and a long tail. Male and female plumages are similar. Juveniles have buff under-parts and heavily spotted breasts.
The term is being used to refer to unexpected changes in breast size or shape as a result of rapid, extreme weight loss. The most common symptoms include loss of volume, sagging, and tenderness.
The genus Sula was introduced by the French zoologist Mathurin Jacques Brisson in 1760. [3] The type species is the brown booby. [4] The name is derived from súla, the Old Norse and Icelandic word for the other member of the family Sulidae, the gannet.
The spotted flycatcher is a small slim bird, around 14.5 cm (5.7 in) in length, with a weight of 14–20 g (0.49–0.71 oz). It has dull grey-brown upperparts and off-white underparts. The crown, throat and breast are streaked with brown while the wings and tail feathers are edged with paler thin margins. [11]