“…However, monitoring was conducted with one annual visit any time from late September to early November, so the number of breeding attempts recorded could be underestimated, depending on the timing of the breeding season. For example, the earliest Carnaby's Cockatoo have arrived on Koobabbie was during the week 19-25 June, and the latest 31 July-6 August (Saunders et al 2014). It takes a pair several weeks to select and prepare a hollow, and commence laying, so if the birds arrived late in the year and the survey was conducted in September, nesting attempts commenced later in the breeding season would not be recorded.…”