Reptiles and amphibians do have home ranges. Releasing them into new areas may make it more difficult for them to survive. I read one study in which a few Bogetophis subocularis were captured, and then released in a new area to study their microhabitat preferences, if I remember correctly. I thought at the time I read the report that this investigation is somewhat flawed as the snakes may be more vulnerable to predators in an unfamiliar area and thus mortality rates may be higher and also because they may not be able to find shelter to escape the hot dry summer in an unfamiliar area.



It is certainly reasonable to suggest that released reptiles and amphibians may attempt to return to their original homes and thus suffer heavier mortalities than normal. It is not at all certain that the locals would automatically outcompete introduced individuals of the same species. Also keep in mind that the mortality rate in a habitat about to be destroyed is 100% and keep in mind that shrinking and fragmentation of habitats everywhere have reduced genetic diversity within many populations. It is thus a good idea to relocate the otherwise doomed animals. Unfortunately given the secretive habits of most amphibians and reptiles, only a very small percentage can ever be found at one time (even if repeated and intensive searches are made) and relocated.



I have provided a link to an article discussing the problems of relocating reptiles. Despite the potential problems, the author chose to release several of the snakes that were given to him. Besides, there is really no good alternative but to relocate rattlers found in and around human surroundings, if for no other reason than to ensure the safety of those people who frequent the area where the rattlers are found.
Relocating reptiles

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