[HankReardon]

The answer to your question is that the migratory birds ALWAYS migrated along their migratory routes for as long a time as there have been migratory birds. No island hopping, full fledged migration.

[WildTurkey]

The answer to your question is that the migratory birds ALWAYS migrated along their migratory routes for as long a time as there have been migratory birds. No island hopping, full fledged migration.

I thought they learned trans-ocean migration during the "flood"?

[SubSailor]

Was that an African migratory bird or a European migratory bird?

(Sorry, couldn't resist the opportunity for a Python reference.)