Birth Timing for Mountain Lions Figure 3. Frequency of births by month for first and non-first litters of adult female mountain lions (Puma concolor) in the Black Hills, South Dakota, USA. doi:10.1371/journal.pone.0044625.g003 PLOS ONE | www.plosone.org 4 September 2012 | Volume 7 | Issue 9 | e44625