Canon PowerShot SX40IS
Courtship ritual includes males pumping their head, bill dipping, and rearing up to exaggerate his size. The female signals consent by duplicating the males head-pumping.
Common migration and winter resident at lakes and ponds.
Molting & Eclipsed males are similiar to females but withyellow or olive bill.
VOICE Familiar quaking, most often from female; Female also gives descending series of raspy,“laughing” quacks.