Migratory behaviors, such as the particular routes animals use, are said to be

Migratory behaviors, such as the particular routes animals use, are said to be instictive. This type of behaviour is also called innate which means that animals perform particular action pattern that is essential for their being. Here are some examples to make it absolutely clear : when animal is shaking water from wet fur, when the spider makes a net, when a bear hibernate. All this behaviours are not learned they just come naturally so that animal will accustom to its environment.

Migratory behaviors are said to be instinctive

Very minute and important evidence needs to be collected in order together detail and figure out what had happened