Table 2 Sampling numbers, median distance and Z scores from the Mann–Whitney-Wilcoxon test for doubly-sampled granaries in two years: Quercus lobata in 2002 and 2004, Quercus agrifolia in 2006 and 2007 (see Appendix A in Additional file 1 for description of test)

From: What seeds tell us about birds: a multi-year analysis of acorn woodpecker foraging movements