Peruvian Racket-tail
Ocreatus peruanus
All racket-tails have pronounced sexual dimorphism. Only the male has elongated outer rectrices (tail feathers) that have bare shafts with terminal flags. On the Peruvian racket-tail, those feathers are straight and do not cross; the flags are narrow ovals that slightly overlap. Male Peruvian racket-tails are 11 to 15 cm (4.3 to 5.9 in) long including the 7 to 8 cm (2.8 to 3.1 in) long outer tail feathers, and weigh 2.5 to 2.7 g (0.088 to 0.095 oz). Females are 7.6 to 9 cm (3.0 to 3.5 in) long and weigh 2.6 to 3.2 g (0.092 to 0.11 oz). Voice: Both male and female Peruvian racket-tails give "a diagnostic, descending, thin sweet trill, 'ti-tlee-ee-ee' single 'tsit' and 'trrt' notes."
ID text from Wikipedia, CC BY-SA 4.0
Rufous-booted Racket-tail
Ocreatus addae
All racket-tails have pronounced sexual dimorphism. Only the male has elongated outer rectrices (tail feathers) that have bare shafts with terminal flags. On both the annae and addae racket-tails, those feathers are decurved and cross; the flags are asymmetric ellipses. Male rufous-booted racket-tails are 11 to 15 cm (4.3 to 5.9 in) long including the 5.5 to 6 cm (2.2 to 2.4 in) long outer tail feathers, and weigh 2.5 to 2.7 g (0.088 to 0.095 oz). Females are 7.6 to 9 cm (3.0 to 3.5 in) long and weigh 2.6 to 3.2 g (0.092 to 0.11 oz). Voice: Both male and female rufous-booted racket-tails give "a diagnostic, descending, thin sweet trill, 'ti-tlee-ee-ee' single 'tsit' and 'trrt' notes."
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: Peruvian Racket-tail and Rufous-booted Racket-tail.