The Black-collared Hawk (Busarellus nigricollis) is a bird of prey found near to rivers or lakes in Central and South America. It feeds mainly on fish, searching the water fot it from the trees and swooping down and catching them using its long curved and powerful talons.
On my first trip in 2008 I have seen none, but this year my luck has changed. I saw one near to Fazenda Baia Grande and several ones on the river at Fazenda Ararauna, which is an excellent place for photographing water birds. Unfortunately no fishing shot with it - maybe next time.