Question

Which of the following do researchers think is a primary factor in the decrease of North American bird populations?(1 point)
Responses

Decreased hunting of predator species
Decreased hunting of predator species

Changes in farming practices such as draining wetlands and pesticide use
Changes in farming practices such as draining wetlands and pesticide use

Recreational hunting of bird species such as waterfowl
Recreational hunting of bird species such as waterfowl

A decrease in conservation efforts

Answer 1

Changes in farming practices such as draining wetlands and pesticide use.

These alter and destroy habitat and reduce food (insects, seeds), and pesticide exposure harms survival and reproduction — factors linked by long-term studies to bird declines.