Passeriformes Pittidae and Corvidae 燕雀目 八色鳥科及鴉科

Corvidae : 鴉科: Pittidae :32 species 八色鳥科:32種

Sunday, July 31, 2011

Formosan blue magpie -- Urocissa caerulea 台灣藍鵲

台灣藍鵲(長尾山娘、山娘)
Formosan blue magpie Urocissa caerulea 特有種Endemic IUCN:LC
特徵:64~69 cm 翼長18至21公分,雌雄鳥外型相似,頭部至胸部為黑色,其他部位大致為藍色,眼睛虹膜黃色,嘴喙及腳為紅色;尾羽很長約40公分,中段黑色而末端為白色。

台灣藍鵲是雜食性的,如蜥蜴、蛇、青蛙、昆蟲或是水果。棲息在低至中海拔約100至1200公尺的闊葉或次生林,通常成小群一起出現,並伴隨著吵雜的「嘎、嘎、嘎」

台 灣藍鵲家族成員通常有5個以上,包括一對一夫一妻制的親鳥加上子代或近親及少數由別的家族來的個體構成,長年使用一個特定領域。大部份的家族繁殖時都有家 族的幫手共同育雛 (共同生殖的巢邊幫手制),幫手大多為雄子代,雌性子代大多在第二年繁殖季前就擴散,部分親鳥會在約20天後繁殖第二巢,幫手會照顧第一巢,繁殖時領域性 很高,有強烈的攻擊入侵者的護巢行為。
繁殖年齡, 公鳥約為3 - 5歲,雌鳥為1歲。



Features: 64 ~ 69 cm, wing length 20 cm, Male and female birds are similar appearance. The head to the chest is black and others are blue, They have yellow iris ,red beak and red feet. The tail is about 40 cm in length and its end is white and the middle is black. Taiwan blue magpie is omnivorous, such as lizards, snakes, frogs, insects or fruit. Habitat is in the broad-leaved or secondary forest the from low to medium elevation (1200 m above sea level) .They often appear together in small groups and accompanied by a noisy "Quack, quack, quack". Taiwan blue magpie family usually have 5 or more members, including parents (monogamous), offspring, close relatives and a few individuals from the other families, The family occupy a specific area for many years. Most of the family have family helpers to breed the brood (Cooperative breeding, helpers at the nest). Helpers are mostly male
offspring. Most of the female offspring leave the family before the breeding season in the second year. Some of the birds breed the second nest after 20 days and helpers will take care of the first nest. They perform a strong nest protection behavior against invaders during the reproduction period. Reproductive age, the male bird is about 3 - 5 years old, female is 1 year old.





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