Table 1.

Results for the tests of phylogenetic signal using squared tree length and phylogenetic independent contrasts. Node numbers refer to figure 2.

	squared tree length			phylogenetic independent contrasts
tree	actual length	null model mean length	p	actual variance	null model mean variance	p	K
full phylogeny	41 767.51	173 964.16	p < 0.001	395.04	1646.92	p = 0.001	0.896
clade at node 5 removed	36 021.01	104 873.97	p < 0.001	563.648	1621.327	p = 0.001	0.59
Setophaga (node 7) only	20 421.67	49 009.34	p < 0.001	638.177	1555.911	p = 0.002	0.88
1000 Bayesian trees	—	—	—	—	—	—	0.793 (mean)