Blue-winged teal and green-winged teal are two species of dabbling ducks that are found in North America. Blue-winged teal are the smaller of the two species, with a length of 14-16 inches and a wingspan of 22-25 inches. They have a dark blue head and neck, with a white crescent-shaped mark in front of the eye. Their back and wings are brown, and they have a white belly. Green-winged teal are slightly larger than blue-winged teal, with a length of 15-17 inches and a wingspan of 23-26 inches. They have a dark green head and neck, with a white crescent-shaped mark in front of the eye. Their back and wings are brown, and they have a white belly.
Both blue-winged teal and green-winged teal are migratory birds, wintering in the southern United States and Mexico. They breed in the northern United States and Canada, and their nests are typically found in dense vegetation near water. Blue-winged teal lay 8-12 eggs, while green-winged teal lay 9-11 eggs. The eggs are incubated for 21-23 days, and the chicks fledge from the nest after 5-6 weeks.