What can be done to reduce erosion at construction site

A barrier/wall can be built around the intended preserved site, this somewhat can stop the wind from eroding the little sediments of the land. Or you can you can use other materials for your site to preserve it, some non sedentary material.

They must use the scientific method

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.