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Table 1 Comparison of Reed Parrotbill nest-site characteristics before and after a flooding event

From: Adaptation or ecological trap? Altered nest-site selection by Reed Parrotbills after an extreme flood

  Variable Before flood n After flood n Statistics df p
Nest landscape Distance to road (m) 24.44 ± 12.05 18 22.46 ± 7.96 13 0.5161 29 0.610
Distance to reed edge (m) 11.39 ± 7.82 18 9.92 ± 6.78 13 0.5441 29 0.591
Distance to water edge (m) 13.28 ± 10.59 18 12.31 ± 11.08 13 0.2471 29 0.807
Distance to perch (m) 31.72 ± 14.96 18 36.54 ± 21.87 13 − 0.6862 19.88 0.500
Nest-site micro-habitat Vegetation cover (%) 15.59 ± 18.28 17 26.92 ± 18.99 13 − 1.6551 28 0.109
Nest height (m) 0.76 ± 0.26 18 1.17 ± 0.13 13 − 5.8522 26.69 < 0.001**
Reed height above nest (m) 1.41 ± 0.29 18 1.07 ± 0.39 11 2.6491 27 0.013*
Water depth (m) 0.22 ± 0.18 12 0.18 ± 0.13 13 0.7871 23 0.440
Number of reed stem 251 ± 55.82 16 231.69 ± 97.77 13 − 0.3743 0.709
Height of reed (m) 2.16 ± 0.20 18 2.26 ± 0.38 11 − 0.8721 27 0.391
Number of reed stem for nest 5.06 ± 1.39 16 4.33 ± 0.89 12 − 1.5063 0.132
Nest characteristics Nest diameter (cm) 8.15 ± 1.26 17 7.96 ± 0.96 12 − 0.4743 0.635
Nest depth (cm) 8.76 ± 1.58 17 9.88 ± 1.00 12 − 2.1401 27 0.042*
Nest volume (cm3) 322.13 ± 172.28 17 335.66 ± 107.80 12 − 0.7543 0.451
Nest cup diameter (cm) 5.38 ± 0.52 17 5.17 ± 0.49 12 − 1.1573 0.247
Nest cup depth (cm) 4.82 ± 0.53 17 5.42 ± 0.56 12 − 2.6363 0.008**
Nest cup volume (cm3) 73.89 ± 16.82 17 76.64 ± 19.30 12 − 0.4453 0.656
  1. Values are mean ± SD
  2. 1Student’s t test
  3. 2Welch’s t test
  4. 3Mann–Whitney U test
  5. *p < 0.05; **p < 0.01