Pied-billed grebes breed once per year. Pairs in the southern part of the range may raise two broods during a single breeding season. Pied-bill grebes begin breeding around April or May and continue through about October.

What time of year do grebes mate?

Western and Clark's grebes engage in a maneuver called rushing during the spring mating season, in which they sprint up to 66 feet (20 meters) across the water in coordinated groups of two or more in about seven seconds.

Do grebes mate for life?

Western grebes are serially monogamous and pairs stay together during one breeding season. During the breeding season, these birds advertise themselves through ceremonies. "Rushing" ceremony, which can be also called water dance, race or run, is a ceremony that is the most frequent display to form a pair-bond.