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xeno-canto is a citizen science project and repository in which volunteers record, upload and annotate recordings of bird calls and sounds of orthoptera and bats. [2] Since it began in 2005, it has collected over 575,000 sound recordings from more than 10,000 species worldwide, and has become one of the biggest collections of bird sounds in the world. [1]
Calls and songs on the xeno canto collection; Screaming Piha recording British Library. Accessed 2018-09-28; Screaming pihas on Freesound. Freesound.org. Accessed 2022-09-20; Photos, videos and observations at Cornell Lab of Ornithologys Birds of the World
The Eurasian wigeon was described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae under the binomial name Anas penelope. [2] [3] Anas is the Latin word for "duck", and penelope refers to a duck that was supposed to have rescued Penelope when she was thrown into the sea.
The first bones of this species to be discovered, in 1955–56, were thought to most closely resemble those of a garganey. [3] In 1987 bones of at least 33 individuals were recovered from rock cavities, revealing a very small duck with a short pointed bill like a wigeon's. [5] Strong legs and reduced breastbone and wings show it was flightless.
The American wigeon is a medium-sized bird; it is larger than a teal but smaller than a pintail. In silhouette, the wigeon can be distinguished from other dabblers by its round head, short neck, and small bill. [10] It is 42–59 cm (17–23 in) long, with a 76–91 cm (30–36 in) wingspan and a weight of 512–1,330 g (1.129–2.932 lb).
The Chiloé wigeon has a body length of 46 to 56 cm (18 to 22 in) and a wingspan of 75 to 86 cm (30 to 34 in). The wing length is about 25 cm (9.8 in) and the weight is approximately 800 g (28 oz). [2] [3] This bird has an iridescent green-blue cap on its head, and a bluish gray bill with a black tip. The cheeks and forehead are white, the eyes ...
Slender-billed xenops Conservation status Least Concern (IUCN 3.1) Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Passeriformes Family: Furnariidae Genus: Xenops Species: X. tenuirostris Binomial name Xenops tenuirostris Pelzeln, 1859 The slender-billed xenops (Xenops tenuirostris) is a species of bird in the Furnariinae subfamily of the ...
The falcated duck breeds in eastern Asia. It nests in eastern Russia, in Khabarovsk, Primorskiy, Amur, Chita, Buryatia, Irkutsk, Tuva, eastern Krasnoyarsk, south central Sakha, Sakhalin, extreme northeastern North Korea and northern China, in northeastern Inner Mongolia, and northern Heilongjiang, and in northern Japan, HokkaidÅ, Aomori, and the Kuril Islands. [4]