The nesting season begins in May, with nest building beginning then.

The female does the majority of the nest building.

In some polygynous species, however, the male does most or all of the nest building.

As he described the nest building to us, an angry look came over his face.

Both the male and female are involved in the nest building.

The male takes no part in nest building or care of the young.

Both the male and female take part in nest building.

The female is involved in most of the nest building that happens about a week before the eggs are laid.

Both parents take part in nest building, incubation and feeding the young.