Warm-Up: Causes of Migration

Causes food Mainly: daylight sources decreasing of hours triggered availability Migration of and by the.

abundant and grounds: suitable breeding of search for by driven Migration food Causes the Primarily sources.

for nesting by: prey search Migration the suitable Driven Causes insect abundant sites and of.

Likely need breeding: to of grounds the triggered suitable and Causes availability find by Migration food.

and weather source: Migration fish by influenced by primary, of the possibly Causes, also their Driven patterns availability food of.

of sites the: Primarily driven Causes search for and abundant prey insect roosting Migration by suitable.