Best models describing patch occupancy of the woodpecker species in woodland patches.

For each model the number of parameters (k), variance explained by the model (r2), the Akaike information criterion score (AICc), the difference between the given model and the most parsimonious model (Δ AICc) and Akaike weight (w) are listed. In each model the species detection probability was estimated. No models were built for Picus canus and Dendrocopos medius because they were present in only one and two forest patches, respectively. For explanations of variable codes: see Table 1.