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Table 1 Contingency table to test the independence between sperm collection success and the birds’ behaviour

From: Sperm collection in Black-legged Kittiwakes and characterization of sperm velocity and morphology

  No specific behaviour Female begging for food Male about to mount Copulation occurred recently Row totals
Successful collection 19
22.4%
24.8%
5
5.9%
5.4%
4
4.7%
1.6%
0
0%
1%
28
Unsuccessful collection 45
52.9%
50.5%
9
10.6%
11%
0
0%
3.2%
3
3.5%
2.3%
57
Column totals 64 14 4 3 85
  1. Number, observed percentage and expected percentage (in italic) under H0 (independence between sperm collection success and the birds’ behaviour) for successful (≥ 10 viable sperm in the ejaculate) and unsuccessful sperm collection according to the pair’s behaviour immediately before male capture