What can students do before they visit? After?

Before students visit Tucker Wildlife Sanctuary, Tucker Wildlife Sanctuary can come to them. The Sanctuary offers an on-school-site program, which brings with it a slide-show and some of the taxidermy and live animals (like their desert tortoise). Teachers can also arrange to have a standards-based packet of worksheets and pictures sent to their school before the field trip. Additionally, teachers may call the Sanctuary ahead of time and arrange for the field-trip to be customized according to standards, class projects/interests--basically to any focus the teacher desires. The Sanctuary's website also includes some pictures that students may view before they visit.
Many fun and engaging activities could be made to follow-up this experience. ELL students, for example, could use the digital pictures they take to create an interactive or online dictionary. Any other student could do this as well.
I also think this trip would hopefully help students become more ecologically aware. They might be prompted to respond in a variety of real-life ways to their own local environments. A Learning Cycle lesson would be very appropriate for a post-trip activity.
Students could, at least, do an extension research project on their experiences. They might do further exploration of species they encounter, or look up ways to take care of a live cactus.