Replication Data for: Figure 24.2, BTPDs, Observed vs Expected numbers of litters for each number of male and female weanlings when litter size = 3, 30 July 2026

Number of males in litter when BTPD litter size = 3 Number of OBSERVED litters with this sex ratio Number of EXPECTED litters with this sex ratio 0 17 16 1 40 48 2 48 48 3 23 16 FILE DESCRIPTION Keywords: BTPDs, Observed vs Expected juvenile sex ratios File name: Figure 24.2, BTPDs, Observed vs Expected numbers of litters for each number of male and female weanlings when litter size = 3, 30 July 2026 OLD file name: Figure 24.2, BTPDs, Observed vs Expected numbers of litters for each number of male and female weanlings when litter size = 3, 09 May 2022. For BTPDs, the most common litter size at first juvenile emergence was 3 (Fig 17.5). N = 128 BTPD litters of size 3. P-value is from the chi-square goodness-of-fit test. Expected values assume a juvenile sex ratio of 1:1 at first emergence (50% males, 50% females). Litter size = litter size at first emergence of offspring from their natal nursery-burrow = number of weanlings. These data used for Fig 24.2 in Hoogland 2026. This file ready for longterm storage on 25 April 2025. I considered litter sizes from the same prairie dog mother in different years to be independent. The expected number of males per litter assumes a balanced overall sex ratio (50% males, 50% females). These data checked TWO TIMES on 09 May 2022, and again on 30 July 2026. File name: Fig 24.2, BTPDs, Observed vs Expected numbers of litters for each number of male and female weanlings when litter size = 3.