Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1975
Rose-breasted Grosbeak
Pheucticus ludovicianus
May 3 Two Buttes Dam, Bowers Co., Colo.: 1♂ + 1♀
May 4 Cimarron River, Baca Co., Colo.: 1♀
May 7 Waterton, Jefferson Co., Colo.: 1♀ - striped underparts on whitish background.
May 8 Barr Lake area, Adams Co., Colo.: 1♂ on east shore cottonwoods. Call note a muted "tchi" or "tchu", unlike the sharper "pic" commonly heard from Black-headed Grosbeak.
May 9 Univ. of Colo., Boulder Co., Colo.: 1♀
Prewitt Res., Washington Co., Colo.: 1♀
May 10 Jumbo Res., Logan Co., Colo.: 1 imm.♂ - rosy spot on breast but striped head like ♀
May 11 Bonny Dam, Yuma Co., Colo.: 1♂ 1♀
May 12 7160 W. 9th Pl., Lakewood, Jefferson Co., Colo.: 1 h.o "tchy" call
May 13 Waterton : 11 (6♂♂, 5♀♀) - incredible number. 3♂♂ in one tree; "tchi" call worked everytime (vs. sharp "pic" for Black-headed)
Sep.23 San Diego area, San Diego Co., Calif.: 1♀ Pt. Loma cemetery