Question

Many different species of songbirds migrate into the united states and canada from central and south america each summer in order to take advantage of the caterpillars and other insects that hatch in the northern forests during the summer. over the past several decades songbird populations have been declining. how might a decrease in the number of songbirds be expected to affect the trees in a northern forest?

Answer 1

they are migrated from one place to another for their survival because there is different different type of climate and different different type of production in any area weak acid at the production level is not good as in one place to the birds migrate from one place to another to affect the country's population also that's why the birds are they formed and not a sensitive