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Glossary
Invertebrates: animals with no backbone.
Lappet: wattle: a fleshy wrinkled and often brightly coloured fold of skin hanging from the neck or throat of certain birds (chickens and turkeys) or lizards.
Subspecies: a population usually restricted to a geographical area that differs from other populations of the same species, but not to the extent of being classified as a separate species.
del Hoyo, J., Elliott, A. and Sargatal, J. (1994) Handbook of the Birds of the World - New World Vultures To Guineafowl. Vol. 2.Lynx Edicions, Barcelona.