en Español

 

Introduction

Microphone Design

Recording gear

Analysis Software

Flight Call Library

Publications

Links

21c mic

 

 

  Nocturnal flight call activity index (updated Daily)

night flight call index

 

2014 nightly call totals

Eastern North American Transect 2013

 

Contact:       ear2sky       at      oldbird       dot       org

501(c)(3) nonprofit facilitating avian flight call monitoring. 

 

Copyright © 2012 Old Bird, Inc.