• Behavioral audiogram of the giant panda (Ailuropoda melanoleuca): Preliminary results

      Owen, Megan A.; Keating, Jennifer L.; Denes, Samuel L.; Hawk, Kathy; Boroski, Juli; Fiore, Angela; Swaisgood, Ronald R. (2011)
      We used behavioral techniques to assess the hearing sensitivity of four, critically endangered, giant pandas at the San Diego Zoo. Study subjects included one adult male (age 19), two adult females (ages 5 and 19), and one sub-adult female (age 3)…. Hearing sensitivity data will enhance the understanding of how anthropogenic noise may impact both free-ranging and captive giant pandas.
    • Female giant panda (Ailuropoda melanoleuca) chirps advertise the caller's fertile phase

      Charlton, Benjamin D.; Keating, J. L.; Rengui, L.; Huang, Y.; Swaisgood, Ronald R.; (2010)
      Although female mammal vocal behaviour is known to advertise fertility, to date, no non-human mammal study has shown that the acoustic structure of female calls varies significantly around their fertile period. Here, we used a combination of hormone measurements and acoustic analyses to determine whether female giant panda chirps have the potential to signal the caller's precise oestrous stage (fertile versus pre-fertile)….