Table 2.

Singing patterns associated with approach order (I = instigator, or first to approach; R = responder, or second to approach; N = never approached)

Source	df	L-R χ2	P	Direction
A. Pre interaction singing and context variables that were correlated with approach order (I, R, N: dependent variables), controlling for dyadID and nested interaction number and omitting cases of 0 approaching birds and Pre number of songs < 3, n = 331
Female present	1	5.249	0.0220	I < R < N
Percent rattle-buzz songs	1	17.707	<0.0001	I > R ≈ N
B. Pre interaction singing and context variables that were correlated with approach order (I, R: dependent variables), controlling for dyadID and nested interaction number and omitting cases of 0 and 1 approaching birds and Pre number of songs < 3, n = 209
Percent overlapping	1	6.727	0.0095	I < R
Percent rattle-buzz songs	1	8.245	0.0041	I > R
C. During interaction singing and context variables that were correlated with approach order (I, R, N: dependent variables), controlling for dyadID and nested interaction number and omitting cases of 0 approaching birds and during number of songs < 3, n = 299
Percent rattle-buzz songs	1	4.857	0.0275	I > R > N
D. During interaction singing and context variables that were correlated with approach order (I, R: dependent variables), controlling for dyadID and nested interaction number and omitting cases of 0 and 1 approaching birds and during number of songs < 3, n = 188
Percent incomplete songs	1	6.747	0.0094	I > R