It was National Tree day today so we decided to join Friends of Royal Park for tree planting in the woodland escarpment area of Royal Park West. After some weeding we planted Chocolate Lilies and Native Dock. While planting we were lucky enough to see a flock of around 50 Yellow-tailed black cockatoos sailing overhead. They settled into the aging acacia trees on the escarpment and commenced using their powerful beaks to crack and break the tree braches to get at the wood boring insect larvae within. It was wonderful to see these beautiful birds so close to the city. Other nice birds seen and heard were Eastern Spinebill, White-browed scrubwren, Spotted Pardalote and Superb fairy-wren.