A population of birds was separated into two groups during a storm one group of birds made it to the tropical rainforest on the mainland while the other group landed on an island with a much drier climate. How might each of these populations of birds change over 1000s generations based on their environment? When reintroduced, brought back together, what will determine if different groups of birds are still one species or two different species?

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.