LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Eastern and western meadowlarks are similar birds but they don’t mate with each other because they use different songs to attract mates. This is:
A
behavioral isolation
B
temporal isolation
C
mechanical isolation
D
geographic isolation
Explanation: 

Detailed explanation-1: -The correct answer is: Behavioral isolation.

Detailed explanation-2: -Their mating songs are quite different. The Western meadowlark has a melodious song, whereas the song of the Eastern meadowlark sounds more like a whistle. Even though their ranges overlap in the central United States, they do not interbreed and are two different species.

Detailed explanation-3: -Eastern and Western Meadowlarks are best separated by voice. For silent birds, look for darker head stripes and a mostly white (not yellow), mustache stripe on Eastern. They also show slightly more white in the tail in flight than Western.

There is 1 question to complete.