Figure 3
From: The common cuckoo is an effective indicator of high bird species richness in Asia and Europe
Correlation between cuckoo population trend and overall trend of bird populations (left panel) and cuckoo climate suitability trend (CST) and overall CST of birds (right panel) in ten European countries. The bird population trends and bird CST in Europe were obtained from Stephens et al.14. The lines are linear regression lines and 95% confidence intervals.
