Strong-billed Woodcreeper
Xiphocolaptes promeropirhynchus
The strong-billed woodcreeper one of the largest members of the ovenbird family and is the heaviest woodcreeper, though the slender long-billed woodcreeper (Nasica longirostris) is longer and the great rufous woodcreeper (Xiphocolaptes major) is larger overall. The strong-billed is 28 to 31.5 cm (11 to 12 in) long. Weights range between 103 and 144 g (3.6 and 5.1 oz). The sexes have the same plumage. Adults of the nominate subspecies X. p. promeropirhynchus have a dark brown crown and nape with buff streaks. Voice: The strong-billed woodcreeper sings mostly at dawn and dusk. Its vocalizations vary among the populations, but very generally are "a long, ringing, descending sequence of 4-8 or 3-10 disyllabic whistles". In northern Central America it makes "a thin, nasal, rising teeeeuuuuuWEEEK!" that falls in volume during a long series. In Costa Rica it "repeats a loud KEW-WEE about 10 times.
ID text from Wikipedia, CC BY-SA 4.0
White-throated Woodcreeper
Xiphocolaptes albicollis
The white-throated woodcreeper is one of the largest members of its subfamily. It is heavy-bodied, with a shortish tail and a long decurved bill. It is 27.5 to 33 cm (11 to 13 in) long and weighs 110 to 130 g (3.9 to 4.6 oz). The sexes have the same plumage. Adults of the nominate subspecies have a dark face with a whitish to pale buff supercilium and moustachial stripe. They have a dark stripe behind the eye and a blackish one on the cheek. Their forehead, crown, and nape are black with strong cream to buff streaks on the crown. Voice: The white-throated woodcreeper sings mostly at dawn and dusk, sometimes late into the evening. Both sexes sing. Its song is a "slow, descending series of 4-6 high, sharp, double-noted whistles, like 'witjuu witjuu - -'." The song has also been put into words as "reenht-wi-KEER wi-KEER wi-KEER wi-KEER wi-KEER wi-KEER wick". Its calls include "snarls, including rising 'wheee', also 2-note call...
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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