Male cardinals typically have bright red feathers that signal to potential mates that they are healthy and virile. Female cardinals have a mixture of duller shades of gray, brown and red because they do not have to impress potential mates with the bright colors and elaborate posturing observed in males.Know More
The color difference observed between the plumage of male and female cardinals is a type of sexual dimorphism. Sexual dimorphism means that males and females exhibit different physical and behavioral traits that clearly identify each sex.
Male cardinals can be aggressive when defending their claimed territory, and they may attack other males that intrude.Learn more about Birds
Cardinals mate for life and are primarily monogamous. After the male has chosen a female, the two begin to build a nest using leaves, grasses, bark and small twigs that they gather and weave together. The nest is usually lined with animal hair and soft grass.Full Answer >
Ducks quack to communicate a range of signals with mates, competitors, offspring and predators. However, quacking is not the only means of vocal communication for ducks. Depending on the species and the sex, ducks can also squeak, chirp, hiss, grunt or whistle.Full Answer >
Birds have many adaptations for flight, but three of the most important are feathers, a hollow and highly modified skeleton and internal organs capable of moving ample amounts of oxygen to flight muscles. Flight is very physically demanding, and birds are highly adapted to meet those demands.Full Answer >
Birds have flight, down, semiplume, filoplume, bristle and down feathers. The flight feathers are further divided into tail feathers, coverts and three types of wing feathers. Some birds also have powder down feathers.Full Answer >