Sheri L. Williamson:
Violaceous Trogon
Sheri L. Williamson:
Mexican Cycadian
Sheri L. Williamson:
Ix Canaan or Firebush
Sheri L. Williamson:
White-necked Jacobin nest
Sheri L. Williamson:
Collared Araçari
Sheri L. Williamson:
Mayan observation of the spring equinox
Sheri L. Williamson:
Provision Tree Flower
Sheri L. Williamson:
Oncidium sphacelatum