Kevin Mahon and Alice Phua's 12th-floor balcony in Claremont in Perth's western suburbs is home to more than just the friendly couple.
For the past two years, a family of brown honeyeaters have been nesting in their potted ficus tree, completely calm and not bothered by their nearness to the people living inside.
Just 30 centimetres and a pane of glass separate the birds from the couple.