Both the male and female sing, but have different songs.

Any given male sang only one or a few of these songs.

The male may sing throughout the day but especially at dusk.

The males sing throughout much of the construction and even more so when a female approaches his nest.

All the males sang the same song each season.

Males sing rarely during this time, although they do so to defend their territories.

Males and females sing in the mornings during the breeding season.

In mated couples, the male often sings first, followed immediately by the female.

Adults are mostly active during night when the males sing to attract females.

Males on the breeding ground sing throughout the day from an exposed perch.