Ivory-billed Woodcreeper
Xiphorhynchus flavigaster
The ivory-billed woodcreeper is 20 to 26.5 cm (7.9 to 10 in) long. Males weigh 40 to 62 g (1.4 to 2.2 oz) and females 35 to 56 g (1.2 to 2.0 oz). It is a medium-sized member of genus Xiphorhynchus, with a long, fairly heavy, slightly decurved bill. The sexes have the same plumage. Adults of the nominate subspecies X. f. flavigaster have a face with fine buffy and blackish streaks, an indistinct buffy supercilium and eyering, and a faint dark stripe behind the eye. Their crown and nape are dark grayish brown with longish buff spots that are almost streaks. Voice: The ivory-billed woodcreeper's song in western Mexico is "piercing whistles in loud cascade that first ascends slightly and increases in volume before descending and slowing, 't-t-t-ttttttttt-t-tewtewtew-tew-tew' ". In northern Central America it is "a rapid trill, descending slightly in pitch at end" and in Costa Rica "a loud, laughing, descending whinny.
ID text from Wikipedia, CC BY-SA 4.0
Spotted Woodcreeper
Xiphorhynchus erythropygius
The spotted woodcreeper is 19 to 24 cm (7.5 to 9.4 in) long. Males weigh 40 to 54 g (1.4 to 1.9 oz) and females 40 to 46 g (1.4 to 1.6 oz). It is a medium-sized member of genus Xiphorhynchus, with a longish, slightly decurved and gradually tapering bill. The sexes have the same plumage. Adults of the nominate subspecies X. e. erythropygius have dusky lores, a buff supercilium and eyering, and dusky olive ear coverts with buff streaks. Their crown and nape are dark olive to brownish olive with small buff spots and a narrow dusky edge. Voice: The spotted woodcreeper is rather vocal. It mostly sings at dawn and dusk and less frequently during the day. Its song is "a series 4–6·5 seconds long of 2–5 (usually 3–4) long descending whistles, each at progressively lower pitch, and sometimes followed by 1–2 additional notes at same pitch".
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: Ivory-billed Woodcreeper and Spotted Woodcreeper.