Why is now the best time to have a bat survey?

There are several reasons why you may need a bat survey for example if you’re renovating your house, and to some people having to get a survey done can be a bit of a nuisance as it’s another item on the agenda to slow down your plans, however they are a legal obligation under the Wildlife and Countryside Act 1981 and Conservation Regulations 1994 if there is any chance you may have bats.


To cause as little delay as possible, you should book your bat surveys in as soon as you can, and now is the optimum time! June-July is when the pups are being born and feeding off the milk of their mothers. At this time the mothers are eating for two and will be out catching thousands of insects each night, so it’s a great time to spot them emerging from buildings at night and returning in the early hours of the morning.

Bats hibernate throughout the winter therefore bat season is from late April to September. Unfortunately if you miss this gateway you will have to wait until next summer. The initial survey (scoping survey) can be done at any time of year. These are done to assess the potential for bats to be roosting on the site. If there is potential however, and you therefore require further surveys (dusk and dawn activity surveys) these can only be done throughout the summer months when the bats are active.

If you require activity surveys, you will usually have one dawn survey and two dusk surveys. Do bear in mind these 3 surveys should be spaced out over the bat season to get the most accurate results, so it is important not to wait until the very end of the season to book in your survey, as it may not leave enough time to complete all 3.

For more information on bat surveys and how to book them, please don’t hesitate to contact us here!

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