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Cornell Lab of Ornithology


Raptor Population Index

Monitoring the populations of migratory birds of prey.

Raptor Population Index


The Raptor Population Index Project (RPI) uses migration counts collected by citizen scientists and professional biologists to monitor population trends of vultures, hawks, falcons, and other birds of prey. RPI generates indices of annual abundance, generates status assessments, and makes information available to the general public, wildlife conservation agencies, and the scientific community.




Topic - wildlife conservation agencies, scientific community, general public

Audience - wildlife conservation agencies, scientific community, general public

Location - North America, continental scope

Goals - conservation



Hawk Migration Association of North America

Hawk Watch International

Hawk Mountain Sanctuary

Bird Studies Canada



Ernesto Ruelas Inzunza, Raptor Population Index Project Manager email Ernesto


Julie Brown, Monitoring Site Coordinator email Julie


Citizen science, volunteer monitoring, participatory action research... this site supports organizers of all initiatives where public participants are involved in scientific research.

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