Ringed Woodpecker
Celeus torquatus
The ringed woodpecker is 26 to 29 cm (10 to 11 in) long. The nominate subspecies C. t. torquatus weighs 107 to 124 g (3.8 to 4.4 oz) and C. t. occidentalis weighs 122 to 135 g (4.3 to 4.8 oz); weight data are lacking for C. t. tinnunculus. Both sexes of all subspecies have a pale cinnamon head with a rufous tinge and a moderately bushy crest. The sexes differ only on their faces: Adult males of all subspecies have a red patch from the malar area to under the ear coverts, and sometimes have some red elsewhere on the head; females have no red on the head.
ID text from Wikipedia, CC BY-SA 4.0
Variable Woodpecker
Celeus undatus
The waved woodpecker is about 23 to 26 cm (9.1 to 10.2 in) long and weighs 61 to 87 g (2.2 to 3.1 oz). In the nominate subspecies C. u. undatus, both sexes' heads are light chestnut-rufous with a bushy crest; the crest is sometimes paler with black bars, and the ear coverts and the sides of the neck have black streaks. Males have a wide red band from behind the bill to the ear coverts; females lack it. Both sexes of adults have a cinnamon-buff chin and throat with black spots or bars. They have rufous-chestnut upperparts with wide black bars, though the rump is usually paler and yellower.
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: Ringed Woodpecker and Variable Woodpecker.