. Bulletin of the Michigan Ornithological Club. Michigan Ornithological Club; Birds. 16 Bl'LLKTIX Ol' THIC caicd by the arrows. For example, the continuous breeding area ends about Davenport, Iowa, on the Mississippi river, while an isolated colony is found in the northward extension of this drainage valley at Red Wing, Minnesota, (Louck, *95, p. 17; Roberts, '90. p. 2'AQ>). The occurrence of the birds in southern Wisconsin will doubtless follow the same law. Up the Illinois river valley above Ottawa, the bird occurs as a rare resident in the vicinity of Chicago, and an isolated colony bree
. Bulletin of the Michigan Ornithological Club. Michigan Ornithological Club; Birds. 16 Bl'LLKTIX Ol' THIC caicd by the arrows. For example, the continuous breeding area ends about Davenport, Iowa, on the Mississippi river, while an isolated colony is found in the northward extension of this drainage valley at Red Wing, Minnesota, (Louck, *95, p. 17; Roberts, '90. p. 2'AQ>). The occurrence of the birds in southern Wisconsin will doubtless follow the same law. Up the Illinois river valley above Ottawa, the bird occurs as a rare resident in the vicinity of Chicago, and an isolated colony breeds abundantly in the KanlAkee swamps of northern Indiana. Up the Wabash valley, above Delphi, it seems to have spread into southeastern Michigan, and has been ^ V^cuPtRl. Fig. 1. Breeding area, shaded, of Prothonotary Warbler in Upper Mississippi Valley. Stragglers and route of dispersal in* dicated by broken lines and arrpws respectively. taken breeding .in Oakland County, l^iidiigan (A. B. Covert, May 8, 1S96, South Lyon). From near the head of the Wa])ash, down the Mauniee valley, others have spread along tlie south shore of Lake Erie to the vicinity of Cleveland. ( Rutler, '«T, p. 1023). TW Prothonotary Warblers of southwestern Michigan, reach tlve Stal-e by way of the Kankakee swamps of nothem Indiajia. and these swamps are reached 1>y t^ie Illinois atid WaJiash bottoms, or both, as stiggeste4 by Rutler. It is very significant to laotice that the stragglers and the new colonies c(wtinne ii*p the valleys in which tne species normally breeds. The map -of the breeding area is also a nutp showing the path of spring migration, and also, in all probability tliae pa^lh. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Michigan Ornithological Club. Grand Rapids, Mich. : The Club
Size: 1371px × 1823px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1897
