The Ruby-Throated Hummingbird is 7–9 cm (2.8–3.5 in) long and has a 8–11 cm (3.1–4.3 in) wingspan. Weight ranges from 2 to 6 g (0.071 to 0.21 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 greyish white below, with near-black wings. Their bill is long, straight and very slender. Males have the classic ruby red throat which shines ruby red when the sun hits it at the right angle. If there is a lack of sun, or you see a male at the wrong angle, the throat will appear a very muted red, to nearly black.
These photos were taken with available light, and no additional flash. The male is a rather old male. The flight shot is of a female, and the shots of the hummingbird on the limb are quite possibly a juvenile male.