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Mallard ducks do not mate for life – known as forming long-term pair bonds. They commit to the female during the mating season, known as a seasonal bond. This occurs between fall and spring. Males leave after the female lays eggs, and the female alone takes care of the young.
Male mallards are easy to identify because of their shiny green head and white neck ring. They also have a brown throat, yellow bill and whitish body and wings. Female mallards have a much more basic mottled brown appearance that can be easily confused with the females of other duck species.
While male ducks have corkscrew-shaped phalluses, female ducks have anti-corkscrew-shaped vaginal tracts. That is, female ducks have reproductive organs specifically designed to be hard to penetrate. This means that only the fittest males can successfully copulate with female ducks.
1 Ιουλ 1989 · Courtship behaviour of mallard ducks breeding in a large pond was studied for 3 successive years. Five male attributes (body weight, sternum length, age, plumage status and social display...
1 Οκτ 2002 · Additionally, female mallards prefer males with higher testosterone levels and improved mateguarding abilities (Davis 2002), although evidence of a relationship between levels of testosterone...
29 Μαρ 2020 · Once all her eggs are laid, the male leaves her to join up with other males to await the moulting period, which begins in June. This will likely answer the question “why are there so many male ducks but no females”, which I am sure many people have thought at this time of year.
20 Φεβ 2014 · Mallards are monogamous but paired males actively pursue forced extra-pair copulations which produces mixed paternity in broods. There are often other males in the vicinity and the mating process excites them to attempt to mate with the female too.
