A PRA and PEA are two common forms of field surveys.
A Preliminary Ecological Appraisal (PEA) – also known as an extended phase 1 habitat survey – is often used to perform an evaluation of all existing habitat on a development site, uncovering insight into the present ecological constraints to advise clients on whether further surveys are needed.
A Preliminary Roost Assessment (PRA) – also known as a bat scoping survey – is the first stage in the bat survey process and used as an opportunity to review a site for old and new habitats, signs of present bats and determine if further action is required.
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