Question

a . Why do migratory birds fly high ?

b.From where does Siberian crane bird migrate and in which season ? Also , state it's destination.

Answer 1

Birds that nest in the Northern Hemisphere tend to migrate northward in the spring to take advantage of burgeoning insect populations, budding plants and an abundance of nesting locations. As winter approaches and the availability of insects and other food drops, the birds move south again.

Answer 2

Overheating he added so it was your answer