Phenological Displacement

[adam89frew]

Hey again,
I am just going over some revision for upcoming exams. Just a thought. Looking at the fact that phenological displacement in flowers is not always a good thing in respect to an article by Schemske, 1981. Looking at Costus species allenii and laevis, both very similar in nectar, and morphology and both hummingbird plants, they have overlapping flowering times, and was shown that may actually benefit both plants, and not cause clogging and interference competition.

Could I also argue for this that as both these species are relatively dispersed, that having both similar species flowering at the same time could possibly encourage the birds to become more actively foraging in flowers which look like these?

Sorry that wasn't very clear, hopefully you get what I'm saying.

Adam

[JackBean]

My guess is, that the respective species are not so much abundant in nature and thus they "refill" each other, so the species dependent on them, can still survive, profit and specialize to them