Free walking tours are conducted by volunteers twice a day at the Royal Botanic Garden in Sydney. They start at the Information booth just outside the shop, more or less in the middle of the Garden, and last between one and a half and two hours. Notable bird sightings are posted on the whiteboard at the booth. On the day of my visit, the presence of a Powerful Owl (Ninox strenua) at the RBG was indicated, and in the course of the tour we visited the tree in which the bird roosted.
The Australian White Ibis (Threskiornis moluccus) is really not one of my favourite birds. When viewed close up they are pretty grubby. They have this horrible featherless head and neck. The trees in which they nest turn white from their droppings. They have a habit of following rubbish trucks to the dump for a feed, and they have been moving into many suburbs including mine. I hate to think about what they’re leaving on my roof to be washed into the rainwater tanks.
But! When viewed at the Royal Botanic Garden in Sydney they seem much more benign. They don’t appear to have destroyed any of the palm trees by crapping in their crowns. Yet.