The word develop means <u>growing or advancing into another stage.</u> In the passage, it is only the word "evolved" which means developed. It means that overtime, the birds gradually changed from carnivorous avian dinosaurs to their current form now due to adaptation. This is a gradual advancement in their form, which means they've truly developed in the years.
In the untrue story of John Smith and Pocahontas the author states that sometimes the best story is trumped by a good story how does the author support this line of reasoning