这是 blue jay 吗？

今天早上拍照红尾鹰之前就先看到这只蓝鸟先歇在窗外的栏杆上， 又很快就飞跑了，所以抓拍得不清楚。 这是 blue jay 吗？

如果是，倒是很有意思。

文献说它们很有智慧，喜欢大声喧哗唱歌，得名为 songbird， 当看到红尾鹰这种肉食鸟敌来临时会为其它鸟类发出警告，这小生灵挺机敏的，果然红尾鹰随后就到!

“The blue jay can be beneficial to other bird species, as it may chase predatory birds, such as hawks and owls, and will scream if it sees a predator within its territory. It has also been known to sound an alarm call when hawks or other dangers are near, and smaller birds often recognize this call and hide themselves away accordingly. It may occasionally impersonate the calls of raptors, especially those of the red-tailed and red-shouldered hawks, possibly to test if a hawk is in the vicinity, though also possibly to scare off other birds that may compete for food sources.”