Bird Guide

Puerto Rican Owl vs Rufous-banded Owl

Puerto Rican Owl (Gymnasio nudipes)

Puerto Rican Owl

Gymnasio nudipes

Medium135 gForest

The Puerto Rican owl is 20 to 25 cm (7.9 to 9.8 in) long with a wing length of 154 to 171 mm (6.1 to 6.7 in). It weighs 100 to 170 g (3.5 to 6.0 oz), with females being slightly heavier than males. It has a rounded head with no "ear" tufts. It has three color morphs; the brown one predominates, the rufous one is fairly common, and the gray one is rare. The brown morph has brown upperparts with irregular paler brown bars and vermiculation. The tail is also brown with paler vermiculation. The wing coverts have some whitish spots. Voice: The Puerto Rican owl's territorial song is "a short, relatively deep, somewhat guttural, toad-like quavering trill...rrurrrrrrr." It also makes "a soft cackling gu-gu and "a loud coo-coo"; the latter call provides the local colloquial name "cuckoo bird".

ID text from Wikipedia, CC BY-SA 4.0

Photo: no rights reserved · CC0
Rufous-banded Owl (Strix albitarsis)

Rufous-banded Owl

Strix albitarsis

Large559 gForest

The rufous-banded owl is 30 to 35 cm (12 to 14 in) long; two specimens weighed 265 and 350 g (9.3 and 12.3 oz). It has a round head and no ear tufts. Adults have a rufous facial disk that is blacker around the orange eyes, white "brows", and white lores. The rest of the head and the upperparts are blackish brown with buffy rufous bars and spots. The tail is also blackish brown, with lighter bars. The chest is dark brown with whitish and tawny bars and spots. The rest of the underparts are silvery white and rufous brown in an ocellated () pattern. The juvenile is buffy with a blackish mask. Voice: The rufous-banded owl's primary vocalization is a "ast series of 5–10 short, deep, guttural notes followed by brief pause and then an explosive higher-pitched note: 'hu hu hu hu hu, HOOa', or 'hu hu hu hu hu hu hu hu hu hu, HOOa'". It also calls a "series of gruff single hoots: 'rrroo rrroo rrroo rrroo...'".

ID text from Wikipedia, CC BY-SA 4.0

Sonogram of the Rufous-banded Owl
Recorded by Niels Krabbe · Call · Zamora-Chinchipe: Cerro Plateado camp 2, Ecuador · CC BY-SA 4.0
Photo: Dario Taraborelli · CC0

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Photos and recordings are credited to their authors under the licence shown. Full profiles: Puerto Rican Owl and Rufous-banded Owl.