Hook-billed Kite
Chondrohierax uncinatus
It is a mid-sized, slender raptor with a large hooked bill. There is extreme variation in bill size and plumage. Birds from beneath can look blackish or gray (especially males) and brown or brick-red (females) variously. This renders species identification at times extremely difficult. The downcurved hook at the tip of the beak is apparent on perched and low-flying birds. Weight can range from 215 to 397 g (7.6 to 14.0 oz) and length is 38–42 cm (15–16.5 in).
ID text from Wikipedia, CC BY-SA 4.0
White Hawk
Pseudastur albicollis
The adult white hawk ranges from 46–56 cm (18–22 in) long with very broad wings and has a white head, body and underwings. The upper wings are black, and the very short tail is black with a broad white band. The bill is black and the legs are yellow. The sexes are similar, but females are larger and heavier—840 g (1.85 lb) compared to the male's 650 g (1.43 lb). Immature birds have extensive black spotting on the upperparts and dark-streaked whitish underparts. The call of the white hawk is a plaintive kerwee.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Hook-billed Kite and White Hawk.