Here are two wonderful books about avian studies. The first one, 'Avian Biology Volume I', is edited by Donald S. Farner, James R. King, and Kenneth C. Parkes. Published by Academic Press in 1971, it offers in - depth knowledge. The second book, 'Avian Physiology Second Edition', is written by Paul D. Sturkie and was published by Comstock Publishing Associates, Cornell University Press in 1965. These books were formerly library copies, so they have library tags and markings. However, they are in good condition. There's some rubbing and minor soiling on the fabric covers and spines, with edgewear on spines and covers. The corners are slightly rounded and frayed, but the bindings are tight. 'Avian Biology' has some staining on the back pastedown, and the text block of 'Avian Physiology' has darkened a bit over time, yet the pages are clean.
These avian books are great for learning about birds. To use them, simply open and start reading. When handling, make sure your hands are clean to avoid further soiling the pages. Since they are old books, be gentle when turning the pages to prevent tearing. Store them in a dry and cool place to avoid moisture damage. If you notice any loose pages, you can use some acid - free tape to fix them gently.
