Wildlife & Ecology Studies Worldwide This link opens in a new windowWildlife & Ecology Studies Worldwide (1935 & earlier to present), is the world’s largest index to literature on wild mammals, birds, reptiles, and amphibians. Coverage includes more than 1.6 million bibliographic records many of which include abstracts. Major topic areas include studies of individual species, habitat types, hunting, economics, wildlife behavior, management techniques, diseases, ecotourism, zoology, taxonomy and much more.