Development of methods for surveying and estimating population size of Short-eared Owls
Author(s): Calladine, J., Crick, H. & Wernham, C.
Published: January 2005 Issue No.: 394 Pages: 29pp
Download article 321.68 KB application/pdf
BirdTrack migration blog (23rd-29th September)
Given the seemingly unfavourable conditions over the past week, it has been a pleasant surprise to see such a diverse range of species on the move.
One bird, twelve journeys, 60 000 miles and invaluable scientific data: PJ the Cuckoo has left an incredible legacy.