A Quarterly Journal of Ornithology; Vol. 90, No. 1, January 1973 [Paperback] American Ornithologists' Union and Oliver L. Austin by The Auk

Very Good. Partial contents: The Relationships of the Hoatzin.- Renal Mucoid Materials in Pigeons Fed High and Low Protein Diets.- Reproductive Relationships of the Rufous-collared Sparrow and the Shiny Cowbird.- An Undescribed Insular Race of the Carolina Wren. Very good trade paperback (American Ornithologists' Union, 1973, 258 pages); pages clean, tight, unmarked; binding sound, spine uncreased; front cover and first 16 pages are curled at the fore-edge;on its way to you the same or next day in bubblewrap; email confirmation; standard mail takes 4-14 days; priority mail takes 2-5 days; international orders go by airmail (6-10 days).