. The Canadian field-naturalist. 254 The Canadian Field-Naturalist Vol. 103 50 30 10 50 CD O £Z a "O c < 30 10 50 30 1976. :â :â :â Breeders before egg-laying Nonbreeders Failed breeders Breeders with egg or chick. 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 Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

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Keywords: ., bookauthorottawafi, bookcentury1900, bookdecade1910, bookyear1919