Table 6. Deriving mean age of primiparity from Superior National Forest wolf breeder data in Table 3.

		Breedersa		First Breeders		Total
Age	N	No.	%	%	No.	Cohort Yearsb
2	31	9	29	29	9.0	18.0
3	23	12	52	23	5.5	16.5
4	16	9	56	4	0.6	2.4
5	10	10	100	44	4.4	22.0
6	3	2	-	-	-	-
7	7	7	-	-	-	-
8	3	3	-	-	-	-
9	2	2	-	-	-	-
10	1	1	-	-	-	-
11	1	1	-	-	-	-
12	1	1	-	-	-	-
Total	98c	57			19.5d	58.9d

^a Includes 12 former breeders, 32 current breeders, and 13 “current or former” breeders.

^b Numbers of first breeders times age.

^c Includes 54 non-breeders plus all current and former breeders (Table 3).

^d Mean age of primiparity (58.9/19.5) = 3.0 years.