How to express “each” for this sentence?

Question

Research concluded there were five groups of species, which have specific patterns for nest selection for each.

Does "for each" in that sentence explain that each of five groups has specific pattern?

Answer 1

I think so, though it is a bit ambiguous.

But a better way to write this based on what you said (each of five groups has a specific pattern) might be:

Research concluded there were five groups of species, each of which has specific patterns for nest selection.