Figure 1: Age Structure and Sex Ratio PMWHR Spring 2004 Total Herd Size = 161 Horses Known Age to 8 years Estimated Age 9-25 years

Figure 2: Mare Pregnancy Results PMWHR Spring 2004 Total Mares = 76 Known Age to 8 Years Estimated Age 9-18 Years

Figure 3: Mare Interchange Activity PMWHR Number of breeding age mares (age > 2) = 404 Number of foals = 200

Figure 4: Mare Interchange Activity PMWHR Number of breeding age mares (age > 1) = 483 Number of foals = 200

Figure 5: Harem Interchanging Mares Losing Foals - PMWHR Numbers indicate the number of interchanges per mare. N= 17 mares

Figure 6: Ages of Interchanging Mares PMWHR N = 187 Mares

Figure 7: Herd and Foal Crop Sex Ratio - PMWHR Even numbers of males and females is represented by a sex ratio of 1. All Data Approximate

Figure 8: Annual Foaling Rate PMWHR

Figure 9: Age Class Foaling Rates PMWHR PMWHR N = 518 Mares and 269 foals

Figure 10: Population Numbers PMWHR All Data Approximate

Figure 11: Foaling Periods PMWHR

Figure 12: Annual Foal Production by Age Class of Mares - PMWHR

Figure 13: Rate of Annual Increase in Herd Size PMWHR All Data Approximate

Figure 14: Annual Foal Crop Survival PMWHR

Figure 15: Total Foal Production PMWHR N = 518 Mares Total of 269 Foals

Figure 16: Recorded Mortality PMWHR Age < 8 = known age Age > 8 = estimated age

Figure 17: Foal Siring by Harem Stallions PMWHR PMWHR Based on observational data for 246 harem stallions and 269 foals (Age<9 is known)

Figure 18: Foal Numbers by Harem Stallions PMWHR PMWHR Based on observational data for 246 harem stallions and 269 foals (Age<9 is known) Based on observational data for 246 harem stallions with surviving foals

Extra Figure: Herd Color Balance PMWHR PMWHR