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The sheathbills are a family of birds, Chionidae.Classified in the wader order Charadriiformes, the family consists of one genus, Chionis with two species. They breed on subantarctic islands and the Antarctic Peninsula, and the snowy sheathbill migrates to the Falkland Islands and coastal southern South America in the southern winter; they are the only bird family endemic as breeders to the ...
It is a free-access, but not free-licensed, on-line audiovisual library [3] of the world's birds with the aim of posting videos, photos and sound recordings showing a variety of biological aspects (e.g. subspecies, plumages, feeding, breeding, etc.) for every species. It is a non-profit endeavour fuelled by material from more than one hundred ...
The eyes are small, but the pupils are relatively large, allowing the highest light-gathering capacity of any bird (f-number of 1.07). [8] The retina is dominated by rod cells , 1,000,000 rods per mm 2 , the highest density of any vertebrate eye, [ 8 ] which are organised in layers, an arrangement unique among birds but shared by deep-sea fish .
The common snipe is a well camouflaged bird, it is usually shy and conceals itself close to ground vegetation and flushes only when approached closely. When flushed, they utter a sharp note that sounds like scape, scape and fly off in a series of aerial zig-zags to confuse predators. [12] They forage in soft mud, probing or picking up food by ...
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G. bicolor can be found under bark year-round. [2] The larvae resemble the larvae of actual bombardier beetles to an extent. Not much is known about them. Though they are not bombardier beetles themselves, they can still emit a foul odor (just not as bad as the beetles they mimic). [4]
Males of the Chatham subspecies are 89–240 g (3.1–8.5 oz) and females 89–170 g (3.1–6.0 oz). [ 21 ] At first glance the bird appears completely black except for a small tuft of white feathers at its neck and a small white wing patch, causing it to resemble a parson in clerical attire.
The genus Ptilinopus was introduced in 1825 by the English naturalist William Swainson with the rose-crowned fruit dove (Ptilinopus regina) as the type species. [1] [2] The genus name combines the Ancient Greek words πτίλον ptilon meaning "down feather" with πούς pous meaning "foot".