Are Carnaby’s nesting in your backyard?

This December, we’re thrilled to share that the next phase of our black-cockatoo conservation project has begun! Our team has started inspecting the nesting tubes that were installed as part of our last project, providing vital nesting sites for the endangered Carnaby's black-cockatoo. We’re not likely to find chicks in each one, as it can take several years for black-cockatoos to recognise the tubes as suitable nesting sites, but we are hopeful to be able to bring you a positive update in our next e-news.

A closer look at the breeding habits of Carnaby’s black-cockatoo

Since returning to the Wheatbelt in July, bonded pairs of Carnaby’s have separated from the larger flocks and returned to the female’s natal area to breed in suitable natural hollows or artificial nests, with egg laying starting from September to October, depending on the season.

If you see Carnaby’s on your property over the spring and summer months, here are some things to look out for that may indicate there is an active nesting hollow nearby.

1. Solitary or small groups of males.
   At the start of the breeding season solitary or small groups of male Carnaby’s often indicates that there is a female sitting on eggs or tending to a newly hatched chick within 6-12km.

2. Chipping of bark from around the entrance of a hollow.
   Whilst other birds can also gnaw bark from trees, the chipping of the hollow entrance to be used as bedding within the hollow is quite unique to Carnaby’s and a good visual indicator of whether a hollow is in use. Similarly, when checking artificial nests for activity, chipping of the sacrificial post can suggest a nesting attempt.

3. A male feeding a female.
   As the chick grows larger, the female begins to spend longer periods of time outside of the nest but remains close. If you see a male feeding his mate, there is likely a nesting hollow with a more advanced chick close by.

4. A male and female foraging or drinking together.
   At this time of year, if a pair is seen together, separate from the larger flock, they are likely to have a chick close to fledging age in a hollow nearby.

The breeding behaviour of Carnaby's black-cockatoos is heavily influenced by environmental factors, particularly the timing of the first autumn rains. This year, due to a delayed onset of rain, the breeding season has been later than usual. This shift in timing can affect the availability of resources for the birds and may influence their breeding success.

By checking the nesting tubes, we aim to better understand how these factors are impacting their breeding and overall survival. Every sighting we receive is crucial in helping us make informed decisions to protect and conserve this remarkable species.

Get Involved

We encourage everyone in the community to keep an eye out for black-cockatoos and participate in our survey. Your observations are invaluable as we work together to support the recovery of this iconic species.

Carnaby’s black-cockatoos feeding.

Healthy Environments team monitoring installed nests.

A birds eye view - nests are installed 5-10m from the ground

This project is funded by the Australian Government Natural Heritage Trust and delivered by Wheatbelt Natural Resource Management, a member of the Regional Delivery Partners panel

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Published eNews #397, December 2024