Black-chinned Hummingbird
Archilochus alexandri
The black-chinned hummingbird is 8.25 cm (3.25 in) long. Adults are metallic green above and white-gray below with green flanks. Their bill is long, straight and slender. The adult male has a black face and chin, a glossy purple gorget (when accurately exposed to sunlight) and a dark forked tail. The female has a dark rounded tail with white tips and no throat patch. Juvenile plumage is similar to that of adult females, but with buff margins on the dorsal feathers. Juvenile males may also possess purple feathers on their throats. Juveniles do not have a forked tail like adults. Voice: The vocalization of the black-chinned hummingbird is a rapid, high-pitched chirp.
ID text from Wikipedia, CC BY-SA 4.0
Ruby-throated Hummingbird
Archilochus colubris
This hummingbird is from 7 to 9 cm (2.8 to 3.5 in) long and has an 8 to 11 cm (3.1 to 4.3 in) wingspan. Weight can range from 2 to 6 g (0.071 to 0.212 oz), with males averaging 3.4 g (0.12 oz) against the slightly larger female which averages 3.8 g (0.13 oz). Adults are metallic green above and grayish white below, with near-black wings. Their bill, at up to 2 cm (0.79 in), is long, straight, and slender. Hummingbird legs are short and have feet with three toes pointing forward and one backward – the hallux. Voice: The vocalizations of ruby-throated hummingbirds are rapid, squeaky chirps, which are used primarily for threats. For example, males may vocalize to warn another male that has entered his territory. During the courtship displays, the male makes a rapid tik-tik tik-tik tik-tik sound with his wings. The sound is produced both during the shuttle display, at each end of the side-to-side flight.
ID text from Wikipedia, CC BY-SA 4.0
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