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Table 5 Number of nest attempts, reproductive outcome and cause of complete nest failure for Falco tinnunculus in Vienna, Austria 2010–2012

From: Hard times in the city – attractive nest sites but insufficient food supply lead to low reproduction rates in a bird of prey

  

Reproductive outcome

Time of nest failure

Cause of nest failure

Year

Nest attempts

Success (%)

Failure (%)

Egg stage

Nestling stage

Abandoned

Predation#

Other

2010

36

21 (58%)

15 (42%)

11

4

5

4

6

2011

52

36 (69%)

16 (31%)

14

2

4

6

6

2012

69

48 (70%)

21 (30%)

18

3

6

4

11

Total

157

105 (67%)

52 (33%)

43

9

15

14

23

  1. Note: ‘#’ based on confirmed predation. If the predation event was not directly observed and the predator not identified, nest failure is assigned to other.