As a photographer I often find the bird exhibits at the zoo very frustrating. I understand why they can’t have glass for the viewing area of the birds(they would fly into it and hurt themselves), but that doesn’t make it any easier to photograph them. Walk in avairies are so much better! However I have found a way to shoot through the wire netting and still get an acceptable image. I might look a bit silly when I am doing it but the result isn’t bad.