A population of birds brightly colored males, and very dull male survive the best which type of selection is this and what is most likely true about the proportion of males of intermediate coloring
This is an example of sexual selection, specifically female mate choice. The brightly colored males are likely being selected by females as more desirable mates, leading to their increased survival and reproductive success.
The proportion of males of intermediate coloring is likely to be lower, as the brightly colored males are more successful in mating and passing on their genes. Over time, the population may become more skewed towards brightly colored males as they outcompete the dull males for mates.