Looks are certainly important for the peacock, with his absurdly bright, burdensome train that he shows off to attract a female. Peahens often choose males for the quality of their trains -- the ...

Galliformes include 290 species of quail, pheasants, turkeys, partridges, grouse, peacocks, guans, curassows, and guinea fowl. Prized as game birds and reared for their meat and eggs, these stout ...

peacock compared to the shorter tail of the (female) peahen, indicates that males are under stronger sexual selection than females (Figure 1a). However, in species where biparental care is ...