Suppose that a group of male pied flycatchers migrated from a region where there were no collared flycatchers to a region where both species were present. Assuming events like this are very rare, which of the following scenarios is least likely?
A) The frequency of hybrid offspring would increase.
B) Migrant pied males would produce fewer offspring than would resident pied males.
C) Pied females would rarely mate with collared males.
D) Migrant males would mate with collared females more often than with pied females.
E) The frequency of hybrid offspring would decrease.
Some male birds and mammals congregate in communal courting grounds called leks.
An adult male killer whale with its characteristic tall dorsal fin swims in the waters near Tysfjord
Keeled Skimmer - male
Male Cat's Reproductive Anatomy
Gluteal muscles of the hip region.
Male and Female Urethras