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Enter your zipcode and download a "Pollinator Guide" with information about native plants specific to your ecoregion.

Jaret Daniels / University of Florida via AP file ORLANDO, Florida - After six years of searching, an entomologist has concluded that three varieties of butterflies native to south Florida have become extinct, nearly doubling the number of North American butterflies known to be gone. "These are unique butterflies to Florida.

"The interactive crop map displays the native origins and primary regions of diversity for selected major agricultural crops."

A concise and nicely illustrated publication about native bees in North America.

"Ecologists have long argued that everything in the nature is connected, but teasing out these intricate connections is not so easy. In fact, it took research on a remote, unoccupied island for scientists to discover that manta ray abundance was linked to seabirds and thereby native trees."

"This educational Web site, designed to serve as a resource for students, teachers, and the general public interested in the biology and identification of mammals in North America, was developed by the External Affairs and Public Programs Division of the Smithsonian Institution's National Museum of Natural History. The resources we make available are derived from the Museum's unparalleled natural history collections, its scientific research, permanent and special exhibits, libraries, and through collaborations with other organizations and individuals with special resources to complement the site.\n\nThis Web site includes detailed descriptions, images, and distribution ranges for more than 400 mammals native to the North American continent. The primary resources for the site have been based in the continental United States, but as the opportunity occurs, the site will be expanded to complete the species found in Canada and Mexico."

" overgrazing of native plants by deer that open up more growing space for invasive exotic plants that deer find unpalatable"

"...birds are now so food-deprived that they take up to twice as long replace their feathers, an annual process known as molt."