Does Proximity to Wetland Shrubland Increase the Habitat Value for Shrubland Birds of Small Patches of Upland Shrubland in the Northeastern United States?

Table 5

Relative importance of variables of the best-supported regression models describing occupancy of nine bird species in relation to vegetation attributes.

Species	All shrubland	Wetland shrubland	Upland shrubland
Carolina wren	0.599	0.000	0.603
Cedar waxwing	0.375	0.375	0.812
Chestnut-sided warbler^1	0.000	0.000	0.000
Blue-winged warbler^1	0.000	0.000	0.000
Eastern towhee	0.343	0.403	0.290
Common yellowthroat^1	0.000	0.000	0.000
Northern cardinal	0.780	0.425	0.424
Song sparrow	0.739	0.478	0.467
American goldfinch	0.326	0.470	0.301

1No models converged.
All shrubland: percent covered by all shrub within 50 m; wetland shrubland: percent covered by wetland shrub within 50 m; upland shrubland: percent covered by upland shrub within 50 m.