Date: 6/5/18 9:01 pm From: Jeff Gilligan <jeffgilligan10...> Subject: [obol] Re: RFI: Native North American Breeding Range Expansion into Oregon
> 3. Tricolored Blackbird. Gabrielson and Jewett (1940)knew of specimens from Klamath Lake, and considered all other reports unsubstantiated and likely erroneous. In mid-1970s still considered mainly Klamath,although I have a dim memory of a Medford area colony? Currently breeds regularly in Klamath and Crook counties, and I believe in the Columbia basin, I think into SE Washington, and has bred in the Willamette Valley? Like Franklin's Gull may need a substantial critical mass to breed.
Yes - they used to breed in North Portland, not far from the Columbia River, until development there ruined the habitat.