Projet FeederWatch (Est des É.-U.)

À propos

Project FeederWatch is a winter-long survey of birds that visit feeders at backyards, nature centers, community areas, and other locales in North America. FeederWatchers periodically count the highest numbers of each species they see at their feeders from November through early April. FeederWatch helps scientists track broadscale movements of winter bird populations and long-term trends in bird distribution and abundance. Project FeederWatch is operated by the Cornell Lab of Ornithology in partnership with Audubon, Bird Studies Canada, and Nature Canada.The data set includes: date of observation, species, highest number seen at one time, effort, weather (low temperature, high temperature, precipitation, snow depth, and snow cover), count site description (size, vegetation, population density of neighborhood, elevation, habitats, numbers and types of feeders, types of food provided, etc.).

November through early April.

North America (US and Canada) Approximately 16,000 participants from all states and provinces.

Landbirds that visit bird feeders

To track broadscale movements of winter bird populations and long-term trends in bird distribution and abundance. Also to detect and explain changes in the wintering ranges of many species.