Table 3. Tested parental care strategy character transition models.

A) Uniform Model				B) Symmetrical Model				C) Custom Model
	M	N	P		M	N	P		M	N	P
B	a	a	a	B	a	b	c	B	a	0	b
M		a	a	M		d	e	M		c	0
N			a	N			f	N			d

Lower case letters represent transition rates to be calculated, 0 = no transition possible. Character transitions with the same lower case letter are modeled with the same transition rate. All rates are modeled as equal in A, transition rates are different between different pairs of care strategies in B, and two pairs of transitions (B<->N and P<->M) are disallowed in C. B = biparental care, M = maternal care, N = no care, P = paternal care.