context: The control of migration, its timing and response are genetically controlled and appear to be a primitive trait that is present even in non-migratory species of birds. The ability to navigate and orient themselves during migration is a much more complex phenomenon that may include both endogenous programs as well as learning.
question: వలస వెళ్ళేటప్పుడు పక్షులు తమను తాము ఎలా నిర్దేశించుకుంటాయి?
answers: endogenous programs as well as learning