HELPING THE OTHERS REALIZE THE ADVANTAGES OF BUYING A TOUCAN

there is not any best size, however, you either have to have sufficiently small wherever they can not get their beaks in, or sufficiently big so they can get them out. I'm applying 1" x one" these days and it really works OK. The lesser measurements of wire may lead to some birds breaking the tips of their beaks off, though a sizing of say, one" x