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After a mother bird lays eggs, she must warm them till they hatch. What is the time from laying an egg to the hatching of the egg called?
A)Gestation period
B)Incubation period
C)Quarantine period
D)Procrastination period

Answer
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Hint: The sex of the offspring is genetically determined in birds, but for the successful hatching process in many species, a constant and accurate temperature is required.
By sitting on the eggs and incubating them, almost all birds produce the necessary temperature, frequently transmitting heat through a temporarily bare region of abdominal skin.

Complete answer:
The incubation period is the time required to take place for every specific development phase. The amount of time for bird eggs to hatch, for example, is the duration of incubation.
For an egg to grow naturally, it must be subjected to an optimal temperature for a significant amount of time. Indeed, for many bird eggs, the optimal incubation temperature is around the temperature of the human body, 98.6 degrees F.

Lets see options :
Gestation period : Fetal growth period from conception until birth is known as gestation period thus this option is wrong.
Incubation period : The amount of time for bird eggs to hatch is the duration of incubation thus this option is correct
Quarantine period : A time span that must elapse until those that are exposed to or attacked by an infectious disease thus this option is wrong.
Procrastination period : Individuals prefer to devote a certain amount of time to a job and stop after the allotted time expires thus this option is wrong

Hence, the correct answer is option (B)

Note: The incubation period differs widely from species to species. Small songbirds take about 10 days and 2 weeks to hatch and the same period to fledge, roughly speaking. It takes 3 weeks to a month for larger birds such as woodpeckers to fledge. After hatching, several ducks, shorebirds and gamebirds immediately leave the nest.