Question

A population of hummingbirds is composed of individuals with short or long beaks, which they use to reach nectar inside flowers. A flowering trumpet vine that produces many deep, bell-shaped flowers is introduced to the region, resulting in fewer short-beaked and more long-beaked hummingbirds. Which of the following conditions most likely caused this shift in the hummingbird population?

Answer 1

That is called adaptation, as the nectar is harder to reach the birds have to grow and adapt. Also it could be because the flowers they did get nectar from are gone and they have to get some from other flowers and to do that they have to have longer beaks to reach it. I hope that helped.