Jeff Costa

Wildlife Biologist studying population ecology and movements of waterbirds, waterfowl, aerial insectivores and declining songbirds.

[Jeff Costa @j1111c]

Look up! Its raptor #migration @ Mississauga, Ontario https://t.co/msVCMDqrFN

[Jeff Costa @j1111c]

Pictures from some walks in June! #birdsofontario https://t.co/WehZepsBVj

[Jeff Costa @j1111c]

#migration in our neighbourhood! @ Mississauga, Ontario https://t.co/FffGhDvytQ

[Dave Moore @davemoore1313]

Webinar: Hope for the Black Tern https://t.co/8Bm322zdAA via @audubonsociety