AP PSYCHOLOGY

Detailed explanation-1: -The birds often migrate south once more as winter approaches and the number of insects and other food sources decreases. Moving away from the cold has always been a driving force for them, although certain species, like hummingbirds, can survive below-freezing conditions if there is enough food available.

Detailed explanation-2: -Avian migration is a natural miracle. Migratory birds fly hundreds and thousands of kilometres to find the best ecological conditions and habitats for feeding, breeding and raising their young. When conditions at breeding sites become unfavourable, it is time to fly to regions where conditions are better.

Detailed explanation-3: -During the winter months, when insects and other food become scarcer, birds tend to migrate south. As long as an adequate supply of food is available, several species, such as hummingbirds, can withstand freezing temperatures as long as they can escape the cold.

Detailed explanation-4: -The habitats migratory birds depend on are in danger to change and to disappear due to increasing temperatures, flooding or desertification. Coastal wetland areas that migrating birds use for nesting and foraging are an example. During their migration, birds rely on these areas to provide food and resting places.

Detailed explanation-5: -Birds mainly migrate for breeding or in search of food due to environmental factors like weather, season etc. Animals migrate in search for suitable shelter, food and suitable place for breeding.