Spot-breasted Antvireo
Dysithamnus stictothorax
The spot-breasted antvireo is about 12 cm (4.7 in) long. Adult males have a dark gray forehead and crown, blackish ear coverts, and white spots on the sides of their head. Their upperparts are grayish olive with a hidden white patch between the scapulars. Their wings are blackish with wide chestnut-rufous edges on the flight feathers and white tips on the coverts. Their tail is rufous-olive with narrow white tips on the feathers. Their throat and upper breast are white and the rest of their underparts mostly yellowish. Voice: The spot-breasted antvireo's song is a "rather hurried series of some 20 mellow, slightly staccato, rising and falling notes, the last 3-5 accelerated". Its calls include a "short, upslurred 'chirr', nasal 'qwark', and a series of three notes with first two on same pitch".
ID text from Wikipedia, CC BY-SA 4.0
Spot-crowned Antvireo
Dysithamnus puncticeps
The spot-crowned antvireo is 10 to 12 cm (3.9 to 4.7 in) long and weighs 15 to 17 g (0.53 to 0.60 oz). Adult males have a dark gray forehead, crown, and nape heavily marked with white spots. Their ear coverts are grayish. Their upperparts are grayish olive with a hidden white patch between the scapulars. Their flight feathers are dark grayish olive with wide buffy grayish edges; their wing coverts are blackish with white tips. Their tail is dark grayish olive with white tips on the feathers. Voice: The spot-crowned antvireo's song is "a rapid...trill, notes not countable, pitch first rising slightly, falling slightly terminally, pace constant initially, then accelerating slightly towards end". Its calls include a "short descending 'chirr' ".
ID text from Wikipedia, CC BY-SA 4.0

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