given that male and female emus are largely monomorphic. This provides a great system to understand how sex chromosomes evolve in their early phase -- and in the case of Pekin duck, in the middle ...

a nod to the ubiquitous insurance spokes-duck. They asked to snap photos. Inside the stroller was the center of attention: a Pekin duck known as Cardi D. McWilliams takes Cardi D everywhere ...

of a Pekin duck, which may have coevolved to prevent forced copulation by unwanted mates, according to a report this week in PLoS ONE. The female oviduct has many out-pockets or "dead ends" and is ...

from the nuclei of the genital organs of “khaki” ducks and injected it into “pekin” ones. The first injections were made on June 28 last year. The patients were nine female pekins and ...

She figures the male and female bird — with their snow white ... That’s until “their yard filled up with poop.” Pekin ducks are considered market poultry, meaning they’re raised for ...