AP BIOLOGY

Detailed explanation-1: -Nest building is one of the most important activities of birds as the nest not only provides shelter and protection from predators to the birds but also plays an important role in brooding i. egg laying and raising their young ones.

Detailed explanation-2: -Nest-building is not just instinctive but is a skill that birds learn from experience, research suggests. University scientists filmed male Southern Masked Weaver birds, in Botswana, building multiple nests out of grass during a breeding season.

Detailed explanation-3: -Instinct/instinctual behaviours need not be learned or practiced. These kind of behaviours are present by birth. Making nest by birds, web spinning by spider, etc., are examples of instinctual behaviour of animals.

Detailed explanation-4: -Innate behaviors do not have to be learned or practiced. They are also called instinctive behaviors. An instinct is the ability of an animal to perform a behavior the first time it is exposed to the proper stimulus. For example, a dog will drool the first time-and every time-it is exposed to food.