The song of the critically endangered regent honeyeater is vitally important to its survival, but there are concerns captive birds do not have the call.

<p>The song of the critically endangered regent honeyeater is vitally important to its survival, but there are concerns captive birds do not have the call.</p>

News and current affairs from Sydney and Melbourne, Australia.

<p>News and current affairs from Sydney and Melbourne, Australia.</p>

News and current affairs from Melbourne, Australia.

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