about Parabolic Microphones
Mailing list for nature sound https://groups.yahoo.com/neo/groups/naturerecordists/conversations/messages
Vicki Powys australian website a great source of information http://web.archive.org/web/20160311015120/http://caperteebirder.com/
about Bioacoustics CIBRA – Centro Interdisciplinare Bioacustica e Ricerche Ambientali
http://www.birdsongs.it/ A great collection of bird songs and calls recorded by Marco Dragonetti, mainly in southern Tuscany.