The female is only brown and white. She is smaller than the male and has straight tail feathers. Body Length: 20-28 inches. Wing tip to wing tip: 30-40 inches.
Females and juveniles are mottled brown with orange-and-brown bills. Both sexes have a white-bordered, blue “speculum” patch in the wing. Mallards are “dabbling ducks”—they feed in the water by tipping forward and grazing on underwater plants. They almost never dive.
Unlike some waterfowl, like Mute Swans, which stay together year in and year out, Mallards only hook up for a single season. For them it’s one and done. Each fall Mallards get together in large flocks and begin the process of selecting a new mate for the following spring. They perform an assortment of wild courtship displays until pairs are formed. Once paired off the new couple has their own mating rituals, and one of these is called the “inciting” display. Here the female follows the male around, no matter where he goes. It sometimes looks as if he’s trying to get away from her and I understand why because she is yapping in his ear the entire time. This is unique because most other females save their nagging until after the wedding. And no bird can nag better than Mrs. Mallard. Her voice is the quintessential duck call. Any TV show, kid’s toy or cartoon that needs a duck call uses the voice of a female Mallard. The classic, loud “quack, quack, quack” is exclusively hers. The male’s voice, conversely, is softer and less harsh. His quiet quack has an up-note at the end, almost like he’s asking a question (probably, “Is she ever going to shut up?”).
When spring arrives it’s the female’s job to look for a place to build a nest, and now it becomes the male’s turn to follow her around. Like most ducks, Mallards need to be close to water, but not all couples can afford waterfront property. So the female will pick a spot as close as she can get, which may be in a brushy or wooded area a few hundred yards away from water. Here’s where things get interesting. After being together for most of the winter, the Mallard couple separates. While she alone builds the nest and lays the eggs, the old man stakes out a territory in a nearby pond or woodland pool. His job is to defend this feeding area so the female will have a place to rest and eat in between her nesting chores. When she needs a break from her motherly duties, she’ll fly to his territory and the two will have lunch together, much like any married couple. However, all this marital bliss ends the moment all her eggs are laid. Now she has no time for the male and will drive him away from the very pond he has been protecting for her. After fighting with her for a bit the male decides he doesn’t need the hassle and moves on. Where does he go? He usually spends the rest of the season at the local pub trying to figure out what went wrong.