This glossary provides standard definitions for many of the terms used
in avian conservation biology. We compiled these definitions to assis
t communication among researchers, managers, and others involved in th
e Neotropical Migratory Bird Conservation Program, also known as Partn
ers in Flight. We used existing glossaries and recent literature to pr
epare this glossary. The cited sources were not necessarily the first
ones to use the terms. Many definitions were taken verbatim from the c
ited source material. Others were modified slightly to clarify the mea
ning. Definitions that were modified to a greater extent are indicated
as being adapted from the originals. Terms that have been used in mor
e than one way by different authors are listed with numbered alternati
ve definitions if the definitions differ substantially.