Diet

Barrow's goldeneye is a diving duck. It dives underwater to catch its prey. It often feeds in flocks. It eats insects, mollusks, crustaceans, fish, and fish eggs.
Life Cycle

The female is ready to breed when she is three years old. She usually returns to the area where she hatched to breed. Breeding pairs form in the late winter or early spring.

The female lays 5-15 light green eggs in a tree cavity lined with down. Sometimes, the female lays her eggs in the nest of other ducks!
The eggs hatch in 32-34 days. The male leaves before the eggs hatch. The ducklings are
precocial and feed themselves shortly after birth. Often, after the ducklings hatch, they join with other groups of ducklings and a single female takes care of all of the ducklings. The female leaves her young when they are 5-6 weeks old, before they can fly. The ducklings fledge when they are 8-9 weeks old.
The male and female mate again the next season.
Behavior

Barrow's goldeneye can be very aggressive and territorial. It is mostly a silent bird, only letting out a
quiet "ka-kaa" during courtship!