. 2011 Jun 28;6(6):e21596. doi: 10.1371/journal.pone.0021596

Table 1. Results of Generalized Linear Models for the effect of selected patch characteristics on patch-level bird density (parameter estimates ± standard error.

	DF	Area	P/A Ratio	Circle	Distance	Prox	DBH	Epiphytes	Flowers
Chucao^†	9		0.0011±0.0004^*	1.1676±0.4136 ^**	0.0008±0.0004^*	0.0001±0.0001^$	0.1923±0.0963^**	−1.033±0.0118^*
Chucao^‡	8		0.0009±0.0004^*	1.1181±0.4189^*	0.0008±0.0004^*	0.00001±0.00001^NS	0.1225±0.1313^NS	−0.0291±0.0133^**
Elaenia	14		−1.493±0.0001^*		0.0001±0.0001^$				0.0001±0.0004^NS
Hummingbird^†	11	−0.0001±0.0001^**		0.1608±0.0528^**	−0.0001±0.00001^**		−0.0204±0.0046^**
Hummingbird^‡	10	0.0001±0.0001^NS		0.1485±0.0616^*	−0.0001±0.0001ns		−0.0181±0.005^**
Rayadito	14	−0.0001±0.0001^NS			0.0005±0.0003^$				0.839±0.2424^NS
Blackbird^†	9	−0.0001±0.0001^**							−0.0012±0.002^NS
Blackbird^‡	8	0.0001±0.0002^NS							−0.0007±0.00023^NS

Only results from best-fitting models and species with at least one significant variable are shown. Note that we used an inverse link function; hence, positive parameters indicate negative effects and vice-versa.

**P<0.01,

**P<0.05,

P<0.10,

^NS

non-significant.

†Non-robust model (significant effects of certain variables were determined by single data points).

‡Robust model (1–2 data points excluded, see Methods for details).