. A biological investigation of the Athabaska-Mackenzie region. Zoology. Fig. I.—Nest and Eggs of Arctic Great Horned Owl (BUBO V. SUBARCTICUS). FORT SIMPSON, APRIL 22, 1 Fig. 2.—Clustered Nests of Cliff Swallow (Petrochelidon lunifrons) Near Lake Hardisty (North of Fort Rae>, Latitude 65. 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 Preble, Edward Alexander, 1871-1957. Washington, Govt. print. off.

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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology