If caterpillars are stripping a plant of leaves, take a sample of the offending insect to the Cooperative Extension Service for identification. If you want to discourage the insect, ask for suggestions on least-toxic controls. Butterflies of different species are attracted to specific flowering nectar plants such as native wildflowers, shrubs and vines. The Cooperative Extension Service and Florida Native Plant Society can provide information on which butterflies are found in your area and which plants they use. Snags or dead trees can be left in place if they don't threaten structures or parking areas.
Birds use the snags for perches, nesting and sources of insects for food.
Literature from the Urban Wildlife Program of the Cooperative Extension Service can aid in your plans. The pamphlets list scores of plants and their wildlife-attracting characteristics, plus they describe which birds, butterflies or mammals use various plants.