Northern Goshawk – Jan 2020

益言堂

在一池塘边(George C. Reifel Bird Sanctuary),众多绿头鸭(Mallard)、Northern shoveler (琵嘴鸭)Northern Pintail正争先恐后的上岸找游人撒落的鸟食,
突然,好像得到了什么号令,一致掉头争先恐后的向入水、开始向池子中央游去。
这是为啥?正在琢磨的刹那,一只灰色身影,无声无息的从空中掠过,而后傲然落在池边的树梢上。
原来是一只:苍鹰

”学名:Accipiter gentilis,别名牙鹰,是鹰科鹰属中一种中到大型的猛禽。与其他𫛭属及鹰等一样都在日间活动。
苍鹰广泛分布在北半球的温带地区。在北美地区被称为Northern Goshawk,是当地的留鸟。“
“苍鹰有明显的两性异形现象,雄鸟上半身灰蓝,下半身则为有条纹的灰,体长49至57厘米、翼展为93至105厘米。雌鸟比雄鸟体型更大,可长达58至64厘米,翼展达108至127厘米,上半身暗蓝灰、下半身则为纯灰。最小的雄鸟体重只有630克,但最大的雌鸟则可重达2.4公斤。”

根据维基百科

酷酷的背影

“The name goshawk comes from the Old English word for “goose hawk,” a reference to this raptor’s habit of preying on birds. “
“Like all accipiters, Northern Goshawks display “reversed sexual size dimorphism”—females are up to 25% heavier than males.”
“The Northern Goshawk is well known for its fierce defense of its nest. It commonly attacks people and other animals that approach the nest too closely.”

Allaboutbirds.org

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