Flock of birds drop dead in northern Mexico (video-photos)
An explanation could be windshear, a strong vertical downward wind that has caused even airplanes to crash
Greece: Swarm of starlings “blackened” the sky in Rio (video)
Starlings are quite social birds, we usually find them in very large flocks that often look like a cloud
Study finds that 4-month-old Ravens are as intelligent as adult Apes
By 4 months old the fledgling ravens are already cognitively comparable to adult primates especially with respect to problem solving abilities