Among the stimuli or causes suggested for migration were changes in temperature, changes in rainfall, changes in atmospheric pressure, changes in hu- midity, changes in food supply, urge to reproduce, urge to return to ancestral home, seeking of additional space for reproductive activities, freezing of lakes and …
What are the factors that influence migration especially that of birds?
Abstract. Stopover behavior of migrant birds is influenced by their energetic condition, but also by extrinsic factors, including weather conditions and habitat attributes such as vegetation structure, microclimates, predation pressure, competition, and food availability.
Which animal makes the longest migration?
Caribou have the longest terrestrial migration, but there is more to the migration story. A grey wolf from Mongolia has been documented as having traveled over 4,500 miles in a year. Caribou are often credited with the longest terrestrial migrations in the world, though without much scientific support.
Which gland is responsible for seasonal migration?
Food consumption increases with the autumn molt, reaching a peak at the beginning of the migration season. These fundamental physiological changes, chiefly under the control of the thyroid gland, are correlated with migratory activity.
Which type of behavior is migration?
Migration is an innate behavior characterized as the long-range seasonal movement of animals; it is an evolved, adapted response to variation in resource availability.
How do birds migrate without getting lost?
But according to an increasingly popular theory, birds and other animals use a radical pair-based compass to “see” the Earth’s magnetic field, allowing them to undertake great migrations and daring rescues without getting lost.