Powerful Woodpecker
Campephilus pollens
The powerful woodpecker is about 32 cm (13 in) long. The sexes differ only on their heads: Adult males are red from their forehead to their crest; females are black there. Both sexes of the nominate subspecies have a black and white face including the throat; the white is a wide band from the lores to below the rear of the ear coverts and from there down the side of the neck. Both sexes have a black hindneck, mantle, scapulars, and upper back with narrow white stripes on either side. Their lower back and rump are white and their uppertail coverts black.
ID text from Wikipedia, CC BY-SA 4.0

Red-necked Woodpecker
Campephilus rubricollis
The red-necked woodpecker is about 30 to 35 cm (12 to 14 in) long and weighs 178 to 236 g (6.3 to 8.3 oz). Both sexes of the nominate subspecies C. r. rubricollis have black to brownish black upperparts. Their wings' upper surface is black with rufous on the flight feathers' inner vanes. The wings' underside is rufous with a blackish trailing edge and feather tips. Their tail is black above and brownish black below. Their underparts are bright red on the breast becoming rufous to rufous cinnamon at the vent.
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: Powerful Woodpecker and Red-necked Woodpecker.