. 2012 Jul 25;7(7):e40933. doi: 10.1371/journal.pone.0040933

Table 5. Linear mixed models describing heat loss through the bill as a percent of heat of heat lost through all body surfaces (percent Q_bill).

Models	K	AICc	ΔAICc	AICc weight
SSP + T_a + T_a ²	7	784.714	0	0.358
SSP + T_a	6	785.129	0.416	0.291
SSP * T_a	7	786.828	2.114	0.124
SSP + T_a + T_a ²+ T_a ³	8	786.860	2.147	0.122
SSP * T_a + SSP * T_a ²	9	787.644	2.930	0.083

Individual is a random effect and square root of activity is a fixed effect in each model. Models with ΔAICc <5 are included here (see full model set in Table S4).

Table 5. Linear mixed models describing heat loss through the bill as a percent of heat of heat lost through all body surfaces (percent Qbill).

Table 5. Linear mixed models describing heat loss through the bill as a percent of heat of heat lost through all body surfaces (percent Q_bill).