If the seeds in question are produced by only one species of plants, then this species also becomes part of the definition of the bird s niche, since now the right plant and the right size of seeds have to be present for the bird to survive.
(the seeds in question; are produced; by only one species of plants) (this species; also becomes; part of the definition of the bird s niche; since now the right plant and the right size of seeds have to be present; T:then) (the right plant and the right size of seeds; to be; present for the bird to survive) (the bird; to survive; )
the seeds in question this species the right plant and the right size of seeds the bird
are produced also becomes to be to survive
by only one species of plants
part of the definition of the bird s niche since now the right plant and the right size of seeds have to be present T:then
present for the bird to survive