Little Woodpecker
Veniliornis passerinus
The little woodpecker is about 14 to 15 cm (5.5 to 5.9 in) long and weighs 24 to 37 g (0.85 to 1.3 oz). Males and females have the same plumage except on their heads. Males of the nominate subspecies passerinus have a red forehead, crown, and nape with dark feather bases showing through. The female is grayish olive-brown with indistinct white spots where the male is red. Adults of both sexes have a mostly dark brownish-olive face with pale barring on the chin and throat. Their upperparts are mostly bronzy olive-green with red feather tips, and pale barring on the rump.
ID text from Wikipedia, CC BY-SA 4.0

White-spotted Woodpecker
Veniliornis spilogaster
The white-spotted woodpecker is 16 to 19.5 cm (6.3 to 7.7 in) long and weighs 35 to 45 g (1.2 to 1.6 oz). Males and females have the same plumage except on their heads. Males have a buffy to olive forehead, a blackish brown crown with very narrow red streaks, and an olive-green hindneck. The female has an olive-brown crown with fine white spots. Adults of both sexes have a mostly brownish face with a thin white supercilium, a thin white "moustache", and white speckles throughout. Their upperparts are mostly olive-green with yellowish to white feather edges that view as bars.
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: Little Woodpecker and White-spotted Woodpecker.