Bird or bat box?

[Fluorescent green]

Hi

I am thinking about encouraging wildlife at my local train station. I have a very tall wall in mind for a bird or bat box, not sure which type.
It it surrounded by small trees, in a valley with trains running past and stopping every 15 mins or so. Super-market boxes ok?

FG

[Two_Sheds]

Sorry, I don't know what a supermarket box is, but bat and bird boxes have to be specific sizes, depending on species. They won't nest/roost in any old thing

How to make a bat box - Projects: Wildlife gardening - gardenersworld.com

How to make your own bird box - Projects: Wildlife gardening - gardenersworld.com

[Fluorescent green]

Hi

Thanks for those links, I just thought the supermarket ones would be easier, but not made to last. Perhaps if I can make more than one, that might work out a lot cheaper.

[veggiechicken]

When you say "Supermarket" do you mean places like Toscos?

[Jeanied]

Bat boxes have to be made from untreated wood as some of the treatments are toxic to them.

[BertieFox]

I made a woodpecker box exactly according to plans and specific dimensions. I also made a blue tit box ditto. The woodpecker went to the tit box repeatedly and tried to enlarge the hole. The tits made their nest inside the woodpecker box.
In future, I shall just stick up boxes with various sized holes in them and wait for the best.