Rufescent Tiger Heron
Tigrisoma lineatum
The rufescent tiger heron is a medium-sized heron, measuring 26–30 in (66–76 cm) in length, with a mass between 630 and 980 g (22 and 35 oz). The sexes are similarly plumaged. The adult's head, neck and chest are dark rufous, with a white stripe down the center of the foreneck. The remainder of its upperparts are brownish with fine black vermiculations, its belly and vent are buffy-brown, and its flanks are barred black and white. Its tail is black, narrowly barred with white. Its stout bill is yellowish to dusky, and its legs are dull green. Voice: The rufescent tiger heron's main call is a low-pitched paired hoot, often given at night. It also gives a fast series of sharp wok notes, which decrease in volume and speed, and a prolonged hoot, transcribed as ooooooo-ooh which rises markedly at the end.
ID text from Wikipedia, CC BY-SA 4.0
Whistling Heron
Syrigma sibilatrix
The whistling heron measures 53 to 64 cm in length and weighs 521 to 546 g. The southern subspecies is bigger but has a shorter bill in proportion to the body. The overall impression of standing birds is gray, with flying birds showing conspicuous white rear parts (lower back, belly, and tail). In both subspecies, adults' upperparts except the lower back are blue-gray.
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: Rufescent Tiger Heron and Whistling Heron.