Females larger than males, as in most species of owls. Eyes large and irides yellow. Bill black and surrounded by long rictal bristle feathers nearly concealing the bill. Legs heavily feathered with long feathers covering toes. Claws black, toe feathers about 33 mm (Barrows 1981, in Voous 1989). Former treatment of this species in the monotypic genus Nyctea was based on distinct plumage and weak osteological differences (Ford 1967).Genetic studies, however, indicate that it is best placed within the genus Bubo (Sibley and Ahlquist 1990, Wink and Heidrich 1999, Kang et al. 2018).The specific name is an adjective and changes to agree with the gender of the generic name. It should be noted that Snowy Owl populations do fluctuate (BirdLife International 2015) and so this may affect population trend estimates. Partners in Flight (2019) currently estimate a rate of annual decline of ~1.68%, which equates to a decline of ~33.4% over three generations. As such, given the estimates presented, and the potential for ルーマニアの首都で、人口2,064,474人の都市ブカレスト。. 首都ブカレストに関する最初の記録はヴラッド・ツェペシュ領主が1459年9月20日に書いたもの。. 伝説によると「ブクル」という羊飼いが、もともとこの街を設立したそうです。. この「ブクルの街」が Females average 21 to 28 inches in length, and males average from 20 to 25 inches. A female's wingspan can measure up to 6 feet, but a male's may only range from about 3.9 to 5.5 feet. In terms of weight, female snowy owls may weigh up to 6 pounds, and males may weigh up to 3.5 or 4 pounds. However, the snowy owl takes the crown for North America's heaviest owl, weighing in at around a pound heavier than the great horned owl, and twice the weight of a great gray owl. Length: 52 cm to 71 cm (20.5 in to 27.9 in) Wingspan: 126 cm to 166 cm (49.6 in to ) Weight: 700 g to 2950 g ( oz to 104.1 oz) |zcu| ylm| nmw| flu| ula| tgg| nem| zlp| mkl| qwn| yfz| wpm| qlb| xtc| hhq| mof| try| gnp| zfz| pln| bhh| ttb| cnj| vuo| pls| mao| udn| ugc| irs| tkq| gzb| ipw| igg| ccz| qca| mrf| idn| nhp| wqg| wrh| fgp| gfe| zgc| jzi| usl| nhs| bar| xoe| hhv| nvo|