Fork-tailed Swift vs Horus Swift

Fork-tailed Swift

Apus pacificus

Small39 gWoodland

At 17–18 cm (6.7–7.1 in) in length, the Pacific swift is the largest of the Apus swifts. It has a 43-to-54-cm (17-to-21-in) wingspan. Females are slightly heavier than males, averaging 44.5 g (1.57 oz) against 42.5 g (1.50 oz). It is similar in general shape to the common swift, although slightly longer-winged and with a more protruding head. The fork of the tail is deeper, and the rump is broader. The upperparts are black, apart from a white rump band and a somewhat greyer head. Voice: The calls given by flocks near the breeding areas are typical swift screams, including a trilled tsiririri or harsher spee-eer. They resemble the cries of the common swift, but are softer and less wheezy. Pacific swifts are less vocal on the wintering grounds, but produce a variety of twitters and buzzes.

ID text from Wikipedia, CC BY-SA 4.0

Photo: ozma · CC BY 2.0

Horus Swift

Apus horus

Small27 gShrubland

The Horus swift is 13–15 cm (5.1–5.9 in) long and quite bulky. It appears entirely blackish except for a white patch on the chin and a white rump. It has a medium length forked tail. It has a fluttering flight like little swift. The little swift has a square tail, and more extensive white on the rump than Horus, and white-rumped swift has a more deeply forked tail and a narrower white band. The call is a buzzing peeeeooo, peeeeooo.

ID text from Wikipedia, CC BY-SA 4.0

Photo: avocat · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Fork-tailed Swift and Horus Swift.