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).[3][4] Adults are metallic green above and greyish white below, with near-black wings. Their bill, at up to 2 cm (0.79 in), is long, straight, and very slender. As in all hummingbirds, the toes and feet of this species are quite small, with a middle toe of around 0.6 cm (0.24 in) and a tarsus of approximately 0.4 cm (0.16 in). The ruby-throated hummingbird can only fox-trot if it wants to move along a branch, though it can scratch its head and neck with its feet.

Internal Mold of a Turretellid Gastropod: Fossil
Diffuser for Mitutoyo M Plan APO Objectives
Diffuser for Canon M-PE 65mm 1-5x
5mm Scale, 027 (calibrated to 0.1mm, 5mm range)
Adapter Plate for Fixing Rotary and Translational Stages
Turtledove Diffusers: Canon MT-24 EX Twin Lite Flash
Fluorescence Kit
Extended Training & Support
Ruby-throated Hummingbird Tail Feather: 3D Model