The bats emerging are a sign of spring that everyone can and should enjoy. I recorded my first sighting this year here: http://www.bigbatmap.org.
The legislation that protects bats in the UK may be one reason that we are seeing signs that bat populations appear to be stabilising and in some cases increasing. However there has been an attempt to undermine this legislation through a private members bill in the Houses of Parliament (Bat Habitat Regulation Bill). A far greater threat now looms in the shape of a European Commission’s review of the Habitats Directive. Follow this link to see how you can help: http://www.bats.org.uk/news.php/273/a_call_for_action_to_defend_nature.