Fork-tailed Woodnymph vs Violet-capped Woodnymph

Fork-tailed Woodnymph

Thalurania furcata

Tiny4 gForest

Fork-tailed woodnymph males are 9.5 to 12.9 cm (3.7 to 5.1 in) long and weigh 3.6 to 6 g (0.13 to 0.21 oz). Females are 8 to 10.7 cm (3.1 to 4.2 in) long and weigh 3 to 5 g (0.11 to 0.18 oz). Both sexes of all subspecies have a straight, black, medium-length bill. Adult males of the nominate subspecies have mostly dark bronzy green upperparts, dark dusky bronze crown and nape, and a violet band across the upper back. Their throat is glittering green, the belly violet, and the undertail coverts dark steely blue with dull white edges. Their tail is forked and blue-black. Voice: The fork-tailed woodnymph's song varies somewhat geographically. In Ecuador and Peru it is "an incessant series of high-pitched bisyllabic, thin wiry notes 'see-tseet...see-tseet....see-tseet...'". In eastern Venezuela it is describes as a "repeated variable series of 3–7 insect-like pulsing notes 'tsee-see-see....tsee-see-see-see-see...tsee-see-see...'".

ID text from Wikipedia, CC BY-SA 4.0

Photo: Auckland Museum Collections from Auckland, Aotearoa New Zealand · CC BY 2.0

Violet-capped Woodnymph

Thalurania glaucopis

Tiny5 gForest

The violet-capped hummingbird is 8 to 11 cm (3.1 to 4.3 in) long. Males weigh 4 to 6.1 g (0.14 to 0.22 oz) and females 4 to 5 g (0.14 to 0.18 oz). Both sexes have a medium length straight bill that is blackish and sometimes has a dark brown tip to the mandible. The adult male has a glittering violet-blue forehead and crown, dark golden-green upperparts, and a steel blue forked tail. Its underparts are brilliant green with greenish to bluish undertail coverts. The adult female is entirely green above and dirty white to pale buff below. Voice: What is thought to be the violet-capped woodnymph's song is "a monotonous rapid series of evenly spaced metallic chips, 'chip..chip..chip...'". In flight it makes "short dry chips, often dry trill or chatter".

ID text from Wikipedia, CC BY-SA 4.0

Photo: iNaturalist.org (Kahio T. Mazon) (Kahio%20T.%20Mazon) · CC0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Fork-tailed Woodnymph and Violet-capped Woodnymph.