Life histories of North American woodpeckers

by Arthur Cleveland Bent

Oberholser, Harry Church.

1896a. Descriptions of two new subspecies of the downy woodpecker, Dryobates pubescens (Linnaeus). Proc. U. S. Nat. Mus., vol. 18, pp. 547-550.

1896b. A preliminary list of the birds of Wayne County, Ohio. Bull. Ohio Experiment Sta., vol. 1, pp. 243-353.

1911a. A revision of the forms of the hairy woodpecker (Dryobates villosus [Linnaeus]). Proc. U. S. Nat. Mus., vol. 40, pp. 595-621.

1911b. A revision of the forms of the ladder-backed woodpecker (Dryobates scalaris [Wagler]). Proc. U. S. Nat. Mus., vol. 41, pp. 139-159.

Osgood, Wilfred Hudson.

1901. Natural history of the Queen Charlotte Islands, British Columbia. North Amer. Fauna, no. 21, pp. 7-50.

Palmer, William.

1901. The malar stripe of young flickers and the molt. Osprey, vol. 5, pp. 102-104.

Pearse, Theed.