Juvenile Cuckoo by Harry Appleyard

Many migratory bird species are undergoing population declines as a result of potentially multiple, interacting mechanisms. Understanding the environmental associations of spatial variation in population change can help tease out the likely mechanisms involved

Click here to read the rest of the article.: Breeding ground correlates of the distribution and decline of the Common Cuckoo Cuculus canorus at two spatial scales – Denerley – – Ibis – Wiley Online Library