Collared Forest Falcon
Micrastur semitorquatus
The collared forest falcon has a dark coloured back with a white neck and breast. The species has three morphological variants (morphs): pale, tawny and dark. The former two have a light coloured collar at the back of their neck, which explains their name. This is the largest species of the forest falcon genus, with a total length of 46 to 58 cm (18 to 23 in), wingspan of 72 to 86 cm (28 to 34 in) and male weights of 467 to 646 g (1.030 to 1.424 lb), averaging some 523 g (1.153 lb), and female weights of 649–940 g (1.431–2.072 lb), averaging 740 g (1. Voice: The call of the forest falcon has been described as a distinctive low, almost human-like ow or ahr. During the breeding season, these vocalizations can be heard before sunrise every morning and into the mid-morning. The low-frequency of the sound and the timing at which they tend to communicate makes it possible for them to be heard at great distances in the dense forest canopy.
ID text from Wikipedia, CC BY-SA 4.0
Lined Forest Falcon
Micrastur gilvicollis
The lined forest falcon is 33 to 38 cm (13 to 15 in) long and weighs 170 to 262 g (6.0 to 9.2 oz). It has pale gray upperparts. Its white underparts have highly variable gray barring, from light gray only on the breast to heavy bars on the entire underparts. Its tail is dark gray with a white tip and two narrow white bars. Its iris is white surrounded by bare reddish orange skin and its legs and feet are yellow. Voice: The lined forest falcon's most common vocalization is a series of "nasal "cow-káh", "cow káw-káw" or "cow káw-káw-káw""notes. It typically calls before dawn and during wet weather.
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: Collared Forest Falcon and Lined Forest Falcon.