Nice zoo - completely unnecessary moving on of vis...

Nice zoo - completely unnecessary moving on of visitors watching the animals though. Was trying to get photo at one enclosure so maybe stayed on a bit longer, but had some over- eager guide asking me to make way for the other guests ( ignoring the family of 8 beside me rapping the glass, and ignoring the fact that the other window (same view, 3 feet along the path) was empty. Spoiled an otherwise nice day