Environmental pond/lake help?

I've got a field approx. 10 acres in length that I used to keep horses
but am now considering turning it into an environmental area to attract
wildlife. I am considering digging out an area so that I can create a
large pond/lake that will serve as an area to attract wetland animals
and birds.

I live in South Wales Carmarthen and was wondering if anyone had any
advice on what species of animals I should be realistic in tempting to
the area and how I should go about this?




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FiveSaintsTrees