Natural selection. I have not searched for any research data on the www, but it is extremely likely that the depth of colour is related to health and general body condition, so hens will select for depth of colour, hence perpetuating the genes of brightly coloured males in preference to those of less well-coloured males.
Males are prettier than females because they have to make themselves look presentable and attractive to find a mate
No. Most are though.
Cardinals are Fringilids, New World seedeaters, including sparrows, finches, and grosbeaks. The cardinal is actually a grosbeak, related to the blue, rosebreasted, and black headed gosbeaks.
Mostly seeds, but in spring the young are fed insects.
Like most birds, cardinals do not hibernate. Cardinals also do not migrate to warmer climates in the winter and can be seen year round.
Cage - no, aviary - possibly but not with similar, particularly red, birds.
Cardinals are birds of forest edges, and suburban lawns. Rarely found in deep woods, they are among the first birds to come to bird feeders, where they love sunflower and safflower seeds.
Compared to all birds, with an ostrich as the largest-then yes. Compared to all common birds you can see daily-about average. You can always notice a cardinal by their red feathers!
Seeing red birds daily could be a sign of good luck, love, or a message from a loved one who has passed away. In some cultures, red birds are considered messengers or symbols of passion and vitality. It could also just be a pleasant coincidence or a reminder to pay attention to the beauty of nature around you.
No. Cardinals are active year round. Birds do not hibernate.
The cardinal is a common bird of forests and suburban areas. It is often called redbird, but we have many species that are red, and only the male cardinal is red. The female is gray brown, with some red on wings and tail. The cardinal is a member of the Fringillidae family, new world seed eaters. Source; R.T. Peterson Field Guide To Eastern Birds
No. Cardinals are big red birds. Hummingbirds are very small birds.
The Columbus Red Birds of the American Association and the Rochester Red Wings of the International League were both affiliated with the Cardinals in the 1940s.
No just their bellys are. Cardinals (males) are fully red though
They are both birds and that is about all they have in common.
Cardinals, like all birds, are warm-blooded.
The origin of the St. Louis Cardinals mascot dates back to the 1920's. As a professional baseball team, the Cardinals name and mascot were based on the birds of the same name. These birds were synonymous with the color red, and were in large numbers in the greater St. Louis area.
The name refers to the birds.
cats or weather has harmed a lot of cardinals and other birds