. Bulletin. Natural history; Natuurlijke historie. DISCUSSION 123 directs the birds past such high spots. Furthermore, the opposite horizon may lack such a prominence and therefore may carry on the downward trend. For example, a thrush setting out from the slope south of the west- erly flowing portion of the Ste. Anne River would have on the south behind it a steep mountain 2000 feet high (Fig. 21, A) from which the horizon drops steadily downstream until cut off by hill B. From the latter the northern horizon across the river rises upstream for a mile or more, but more gently and for a shorte
. Bulletin. Natural history; Natuurlijke historie. DISCUSSION 123 directs the birds past such high spots. Furthermore, the opposite horizon may lack such a prominence and therefore may carry on the downward trend. For example, a thrush setting out from the slope south of the west- erly flowing portion of the Ste. Anne River would have on the south behind it a steep mountain 2000 feet high (Fig. 21, A) from which the horizon drops steadily downstream until cut off by hill B. From the latter the northern horizon across the river rises upstream for a mile or more, but more gently and for a shorter distance. The stream itself probably has little influence unless it is rather wide. It would appear dark, not as a silver rib- bon directing the migrant on its way. Furthermore, birds upon reaching a large river may turn either down- or upstream. This occurs at the sharp curve on York River at Whitehouse (p. 75).. 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 Peabody Museum of Natural History. New Haven : The Museum
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Keywords: ., bookcentury1900, bookcollectionbiodiv, booksubjectnaturalhistory
