TABLE 1.
Population | Salisbury Plain | Ljubljanska barje | Topornya | Balingen | Westerwald | Oberfranken | Engadine valley |
---|---|---|---|---|---|---|---|
Location and study duration | |||||||
Country | United Kingdom | Slovenia | Russia | Germany | Germany | Germany | Switzerland |
Monitoring period | 2010–2014 | 2002–2014 | 2001–2016 | 1983–1993 | 1979–1984 | 1990–1994 | 1989–1993 |
Breeding success (number of broods) | |||||||
Known age | 91 | 41 | 276 | 25 | 20 | 24 | 0 |
Unknown age | 70 | 341 | 245 | 147 | 70 | 92 | 0 |
Total | 161 | 382 | 521 | 172 | 90 | 116 | 0 |
Ringed individuals | |||||||
Nestlings (recaptured as adults) | 292 (40) | 1,066 (35) | 1601 (22) | 372 (26) | 495 (18) | 233 (9) | 219 (36) |
One year old | 41 | 9 | 252 | 1 | 0 | 4 | 0 |
Unknown age | 63 | 289 | 296 | 136 | 63 | 73 | 48 |
Total | 396 | 1,364 | 2,149 | 509 | 558 | 310 | 267 |