甜椒 - 鳥(niǎo)類(lèi) - 動(dòng)物百科全書(shū)
keestrel名稱(chēng)給予獵鷹屬的幾個(gè)不同成員法爾科。佳隼最容易被他們的典型狩獵行為引起懸停在開(kāi)放國(guó)家,并俯沖獵物,通常是小型動(dòng)物" target="_blank">哺乳動(dòng)物,蜥蜴或大昆蟲(chóng)。其他獵鷹更適合在翼上積極狩獵。 Kestrels需要輕微的逆風(fēng)才能徘徊,因此是普通歌唱者的風(fēng)沙所在地。
獵鷹是法爾科屬的幾種鳥(niǎo)類(lèi)中的任何一種,例如Peregrine Falcon,這是猛禽或獵物鳥(niǎo)類(lèi)。這些鳥(niǎo)有薄,尖翼的翅膀,使它們以極高的速度潛入。據(jù)說(shuō),Peregrine Falcons是地球上最快的鳥(niǎo)類(lèi),達(dá)到了高達(dá)200英里/小時(shí)的速度。其他獵鷹包括Gyrfalcon,Lanner Falcon和Merlin。一些小型食蟲(chóng)獵鷹長(zhǎng),狹窄的翅膀被稱(chēng)為愛(ài)好,以及他們捕殺的小嚙齒動(dòng)物的一些懸停被稱(chēng)為茶隼。獵鷹是家庭的一部分Falconidae, which also includes the caracaras, laughing falcon, forest falcons, and falconets.
Kestrels' ability to spot prey is enhanced by being able to see ultra-violet which is strongly reflected by vole urine. Plumage typically differs between male and female, and (as is usual with monogamous raptors) the female is slightly larger than the male. This allows a pair to fill different feeding niches over their home range.
Kestrels are bold and have adapted well to human encroachment, nesting in buildings and hunting by major roads. Kestrels do not build their own nests, but use nests built by other species.
THREATS TO KESTRELS & FALCONS
The peregrine falcon became endangered because of the overuse of pesticides during the 1950s and 1960s. Pesticide build-up interfered with reproduction, thinning eggshells and severely restricting the ability of birds to reproduce. The DDT buildup in the falcon's fat tissues would result in less calcium in the eggshells, leading to flimsier, more 脆弱的雞蛋。在世界的幾個(gè)地區(qū),這個(gè)物種被殺蟲(chóng)劑淹沒(méi)了。雞蛋和小雞通常由盜賊和收藏家瞄準(zhǔn)。
世界各地的野生動(dòng)物服務(wù)組織了Peregrine Falcon Recovery團(tuán)隊(duì),以飼養(yǎng)它們。鳥(niǎo)兒被冷雪喂養(yǎng),所以他們看不到人類(lèi)的培訓(xùn)師。然后,當(dāng)他們足夠大時(shí),盒子被打開(kāi)了。這允許鳥(niǎo)來(lái)測(cè)試它的翅膀。隨著鳥(niǎo)類(lèi)變得更強(qiáng)壯,食物減少,因?yàn)檫@只鳥(niǎo)可以捕食自己的食物。此過(guò)程稱(chēng)為**。要釋放一個(gè)俘虜繁殖的獵鷹,這只鳥(niǎo)被放在塔頂或懸崖壁架的特殊盒子里。全球恢復(fù)努力取得了非常成功。
在美國(guó),禁止DDT最終允許發(fā)布鳥(niǎo)類(lèi)成功繁殖。 1999年8月25日從美國(guó)威脅和瀕危物種名單中刪除了Peregrine Falcon。2003年,一些國(guó)家開(kāi)始發(fā)出有限的獵鷹犯罪許可證由于恢復(fù)計(jì)劃的成功而導(dǎo)致叢。在英國(guó),自20世紀(jì)60年代以來(lái),人口恢復(fù)了很好的恢復(fù)。