Semiplumbeus hawk

The semiplumbeous hawk is a small bird, averaging about 12-13 inches in length[1] (approximately the size of a kestrel or merlin). The semiplumbeous hawk is easily identifiable due to its striking orange cere and black face mask.[1] Rarely seen in flight, these hawks typically perch silently on a high branch, waiting for prey.[1] The semiplumbeous hawk often follows swarms of army ants in order to capture antbirds,[1] which, along with other small songbirds, make up a large portion of its diet. The overall population of semiplumbeous hawks is small - estimated at 1,000 to 10,000 mature birds - and declining.[2] (Wikipedia)