We love the RSPB activities. We have already made hedgehog cafes and gone Pond Dipping and rock pooling so this time we decided to give making a bird bath a go a bird bath. Here are some tips for making a bird bath; Bird baths should be shallow rather than deep. A good rule of thumb is no more than 3 inches deep. A graduated edge is good, too, so birds can ease their way in to a level that’s comfortable for them. Avoid an overly slick surface for the bowl. Just like you in the bathtub, ...