Sympatric speciation would most likely be caused by an injury that causes some birds to nest on the ground instead of in the trees.
A species is a group of related organisms that can interbreed to produce fertile progeny.
Speciation is the process by which a group of organisms with identical traits divide into two or more distinct species. Speciation mechanisms are divided into two broad categories:
An injury that causes some birds to nest on the ground instead of in the trees is most likely to cause sympatric speciation because in this case the population of birds is not physically separated but their behavioral preferences lead to their habitat separation this can lead to the formation of new species over time.
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