Green-winged Teal - Major Life Events

Major Life Events

Nesting chronology varies geographically. In North Dakota, Green-winged Teal generally begin nesting in late April. In the Northwest Territories, Canada, Green-winged Teal begin nesting between late May and early July. At Minto Lakes, Alaska, Green-winged Teal initiate nesting as early as June 1 and as late as July 20.

Green-winged Teal become sexually mature their first winter. They lay 5 to 16 eggs. The incubation period is 21 to 23 days.

Green-winged Teals often fledge 34 to 35 days after hatching or usually before 6 weeks of age. Young Green-winged Teal have the fastest growth rate of all ducks.

Male Green-winged Teal leave females at the start of incubation and congregate on safe waters to molt. Some populations undergo an extensive molt migration while others remain on or near breeding grounds. Females molt on breeding grounds.

Green-winged Teal are among the earliest spring migrants. They arrive on nesting areas almost as soon as the snow melts. In early February, Green-winged Teal begin to depart their winter grounds, and continue through April. In central regions Green-winged Teal begin to arrive early in March with peak numbers in early April.

In northern areas of the United States, Green-winged Teal migrating to wintering grounds appear in early September through mid-December. They begin migrating into most central regions during September and often remain through December. On their more southerly winter areas, Green-winged Teal arrive as early as late September, but most do not appear until late November.