How are camera traps being used in conservation?

• Camera traps are used to find the density and population of a species
• This use can be time intensive
• May require the use of capture and recapture methods 
• Species may be required to have markings to be studied sucessfully
• To be accurate it has been found that minimum of 20 fixed camera locations are needed, with 40 being the preferred minimum
• 10-20 photographs should be taken at minimum
• Camera traps are used to spot behaviors such as mating or hunting
• Camera traps are used to identify individuals of a species
• Camera traps can be used in conjunction with other methods of collecting information from an environment such as scat collection. This help create a more complete picture of the species and its relationship to the environment. 

Below is a photo of a camera trap taken from a Google Image search.