Survey of the breeding bird populations in the Drugeon basin, Franche-Comté, France, based on IPA (1998-2020)
Collected date : from Apr 1998 to Jun 2020
Creators :
Dominique Michelat
Patrick Giraudoux
Bird counts were carried out from 1998 to 220 using the IPA method described in Blondel et al (1970), IBCC (1977) and Blondel et al (1981). See section "Data acquisition methods".