In a population of birds brightly colored males and very dull males survive best which type of selection is this and what is mostly true likely true about the proportion of males of intermediate coloring
This scenario represents a form of disruptive selection, where individuals at the extreme ends of a trait spectrum have a higher chance of survival and reproductive success compared to those with intermediate traits.
Most likely, the proportion of males with intermediate coloring would decrease over time as brightly colored and very dull males outcompete them for resources and mates. This can lead to a bimodal distribution of traits, with fewer individuals exhibiting intermediate colors.