Hi, There is a new paper on automatic acoustic monitoring of 87 species using automatic recording units. The data and the list of species can be downloaded from here: http://www.kaggle.com/c/multilabel-bird-species-classification-nips2013 An open access paper on this dataset can be found here: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0096936
The conclusion is that nowadays, for a medium set of species (but far larger than a couple of years ago) automatic acoustic monitoring of birds-insects-amphibians can achieve high-scores in degraded environments. Kind regards Dr. Potamitis Ilyas