Table 4 Species with responses to vegetation age as detected by Wilcoxon paired-sample tests on differences in abundance without regard to vegetation units. The ranges of vegetation ages are: Young = 1.5 to 3 years, and Old = 6 to 9.5 years. Probability of a smaller Wilcoxon T statistic (2-tail) ≤0.05 indicated by an asterisk (*), P > 0.05 indicated by ns. Dashes (-) indicate no apparent vegetation age preference. Refer to Additional file 1 for species names. Samples are from London and Surprise West forest blocks northeast of Walpole, Western Australia, from 2004, 2008, and 2012
Common name | Number of sample pairs | Mean difference in abundance (birds per sample point) | P of smaller T | Vegetation age preference |
|---|---|---|---|---|
Tree Martin | 7 | 5.5 | ns | - |
Baudin’s Cockatoo | 10 | 4.8 | ns | - |
Red Wattlebird | 8 | 2.0 | * | Young |
Western Rosella | 10 | 1.6 | ns | - |
Western Gerygone | 7 | 1.4 | ns | - |
Australian Ringneck | 7 | 0.9 | ns | - |
Western Spinebill | 10 | 0.3 | ns | - |
Grey Currawong | 7 | −0.1 | ns | - |
Western Golden Whistler | 10 | −0.4 | ns | - |
Laughing Kookaburra | 10 | −0.5 | ns | - |
Australian Raven | 8 | −0.5 | ns | - |
Black-faced Cuckoo-shrike | 10 | −0.6 | ns | - |
Striated Pardalote | 8 | −0.6 | ns | - |
Fan-tailed Cuckoo | 7 | −0.9 | ns | - |
Horsfield’s Bronze-Cuckoo | 7 | −1.0 | ns | - |
Grey Fantail | 9 | −1.3 | * | Old |
Inland Thornbill | 10 | −1.5 | ns | - |
White-browed Scrubwren | 7 | −4.1 | * | Old |