Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. Which of the following pieces of evidence, if true, would be cause for this reclassification?
A) The two forms interbreed often in nature, and their offspring have good survival and reproduction.
B) The two forms live in similar habitats.
C) The two forms have many genes in common.
D) The two forms have similar food requirements.
E) The two forms are very similar in coloration.
Features of the bird wing and feather
Red-eyed vireos, Vireo olivaceus, counted along census routes of the Breeding Bird Survey
blue jay bird
Bird carved from soapstone, Great Zimbabwe, Zimbabwe.
A simple diagram of bone marrow progenitors. All of the cells listed can be transformed to become a ...
Dodo Bird Drawing