Some birds are pollinators that co-evolved with plants.
Plants spread by self- seeding and below ground stems.
Some birds are pollinators that co-evolved with self seeding organisms.
Some birds are pollinators that co-evolved with what organisms?

1: mammals
2: animals
3: self eating
4: peachleaf willow
5: self seeding
6: self destructive
7: selfies
8: scarce resources