The male and female of which of the following birds resemble each other?

The correct answer is Bulbul.

Key Points

• The male and female bulbul closely resembles each other.
• Sexual Dimorphism in birds is the distinct difference in size, appearance, behaviour, or plumage between the sexes of a bird in addition to the sexual organs themselves.
• Dimorphism in size is associated with variation in the social mating system and sex differences during parental care.
• Whereas differences in plumage or colour dimorphism are associated with variation in the frequency of extra–bond paternity.

Important Points

Ornithology

• The word Ornithology comes from two Greek words- 'Ornis' (Birds) and 'logos' (theory).
• It deals with the scientific study of all aspects of birds like body shape, appearance, habitat, migration pattern, mating behaviours, warning predators, flock movement, voice, ability to mimic, etc.
• A person who studies birds is known as an Ornithologist.