Whether you live in the city or the countryside, the constant chorus of birds is a reminder of how much wildlife there is outside your window. Although the cast of characters depends on the time of ...

Copyright of bird-song recordings held by the Cornell Laboratory of Ornithology and the Borror Laboratory of Bioacoustics. Booklet entitled, "Birding by ear : a guide ...

https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!1061131~!0#focus ...