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.
অভিবাসনের ক্ষেত্রে জটিল ঘটনা কী?
The ability to navigate