| Call number | Item |
| Q | Science (Go to start of category) |
| QH-QR | Biological Sciences (Go to start of category) |
| QL | Zoology (Go to start of category) |
| QL669 .W94 1919 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) Beiträge zur Entwicklungsgeschichte von Zähnen und Gebiss der Reptilien (in German; Bonn: F. Cohen, 1919), by M. W. Woerdeman (page images at HathiTrust; US access only) |
| QL671 .A38 | Alabama Birdlife (partial serial archives) |
| QL671 .A67 | Ardea (partial serial archives) |
| QL671 .A82 | Bird-Lore (partial serial archives) |
| QL671 .B572 | Birdscope (partial serial archives) |
| QL671 .C6 1899 | Bulletin of the Cooper Ornithological Club (full serial archives) |
| QL671 .C6 1900 | The Condor (partial serial archives) |
| QL671 .K5 | The Kingbird (New York State Ornithological Association journal; Javascript required for browsing issues) (partial serial archives) |
| QL671 .N9 | The Auk (partial serial archives) |
| QL671 .P3 | The Passenger Pigeon, by Wisconsin Society for Ornithology (partial serial archives) |
| QL671 .W5 | The Wilson Bulletin (ornithology journal) (partial serial archives) |
| QL674 .A9 1827 | The Birds of America, From Original Drawings (4 volumes; London: The author, 1827-1838), by John James Audubon (at digital.cincinnatilibrary.org) |
| QL674 .A9 1831 | Ornithological Biography: or, An Account of the Habits of the Birds of the United States of America, Accompanied by Descriptions of the Objects Represented in the Work Entitled The Birds of America (5 volumes; Edinburgh: A. and C. Black, 1831-1839), by John James Audubon |
| QL674 .A96 | Birds of America, by John James Audubon (frame-dependent illustrated HTML at audubon.org) |
| QL674 .W76 | American Ornithology: or, The Natural History of Birds Inhabiting the United States, Not Given by Wilson (4 volumes, 1825-1833), by Charles Lucian Bonaparte (page images at Wisconsin) |
| QL675 .K4 | British Birds' Nests: How, Where, and When to Find and Identify Them (London et al.: Cassell and Co., 1898), by Richard Kearton, contrib. by Richard Bowdler Sharpe, illust. by Cherry Kearton (multiple formats at archive.org) |
| QL676 .56.N9 | Building Nest Structures, Feeders, and Photo Blinds for North Dakota Wildlife, by Chris Grondahl and John Dockter (PDF at Wayback Machine) |
| QL676 .B15 | A-Birding on a Bronco (Boston and New York: Houghton, Mifflin and Co., 1896), by Florence Merriam Bailey (page images at HathiTrust) |
| QL676 .B17 1889 | Birds Through an Opera Glass (Boston and New York: Houghton, Mifflin and Co., 1889), by Florence Merriam Bailey (page images at HathiTrust) |
| QL676 .B17 1889 | Birds Through an Opera-Glass (Cleveland et al.: The Chautauqua Press, c1889), by Florence Merriam Bailey |
| QL676 .B935 | The Burgess Bird Book for Children, by Thornton W. Burgess (Gutenberg text and audio reading) |
| QL676 .B96 | Wake-Robin, by John Burroughs (Gutenberg text) |
| QL676 .D6 | Bird Neighbors, by Neltje Blanchan (Gutenberg text) |
| QL676 .D6 1896 | British Sea Birds (London: Sands and Foster, 1896), by Charles Dixon, illust. by Charles Whymper (Gutenberg text and illustrated HTML) |
| QL676 .D736 | Birds That Every Child Should Know, by Neltje Blanchan (illustrated HTML at kellscraft.com) |