Fig 11.5, BGUW, Age of first copulation, females, 19 March 2026

Females that first copulated in 1st year Females that first copulated in 2nd year Females that first copulated in 3rd year BTPDs, percents 35.3 63.35 2 GPDs, percents 99.7 UPDs, percents 100 WTPDs, percents 99.5 FILE DESCRIPTION Keywords: BGUW, Age of first reproduction, females File name = Fig 11.5, BGUW, Age of first copulation, females, 19 March 2026 OLD File name = BGUW, Females, Age of first copulation, 18 Feb 2025 Sample sizes for BTPDs are from Hoogland 1995, pages 397-398 Sample sizes above bars are for possible copulation as yearling; Sample sizes for possible cop as 2-year olds and 3-year olds and 4-year olds would be smaller--because some yearlings did not survive to be 2-year olds. GPD data are from Petrified Forest National Park. NO Data from Redondo Meadow Colony (RMC of Valles Caldera National Preserve (VCNP) or Visitor Center Colony (VCC) of VCNP Best estimate for first cop at age 3 for BTPD females is from stats for Hoogland 1995 (University Chicago Press) in stapled summaries called "Prob of copping vs age") Sample sizes are above bars in Fig 11.5. BTPD percentages for females do not add up to 100%, because for age = 3 I divided by 284. Not sure if this is best way. Main point here is that most BTPD males first copulated as 2-year olds. Sample sizes shown here are only for the number of juveniles followed in first year after weaning; Sample sizes for other ages are unknown, but always smaller These percentages checked TWO TIMES on 06 April 2022 These data used for Fig 11.5 in Hoogland 2026. This file ready for longterm storage on 18 Feb 2025. File name = Fig 11.5, BGUW, Age of first copulation, females, 19 March 2026 BGUW = black-tailed, Gunnison's. Utah, and white-tailed prairie dogs