Monday, October 10, 2016

Rufous Hummingbird

Examining Potential Causes of Population Declines in Rufous Hummingbirds
Rufous Hummingbird populations are experiencing a large decrease (> = 50%) in Canada. The core of the global range of this species is in British Columbia. This is the only hummingbird species which is showing declines among the species that occur in Canada. There may be multiple factors underlying those declines and stressors may act at different life stages and locales throughout the year as hummingbirds migrate, breed and overwinter. As a pollinator, the rufous hummingbird contributes significant ecosystem services. To test the hypothesis that hummingbirds may be exposed to  insecticides, this research will determine rufous hummingbird exposure to pesticides and their possible effects in the Fraser Valley.

Adult male

No comments: