Simon Cherriman said the deaths of the unborn eaglets, who fell from their nest and died before they had a chance to hatch, was a tragic outcome in Mt Helena which could have been prevented.
"Fire management practices in our forests need to improve so they don't have the same outcome as the Parkerville bushfires in 2014," he said.
"As well as countless other native animals and highly important habitat trees which are hundreds of years old, the death of these eagles is a clear example of why we need to place emphasis on taking a community approach to fuel-load reduction.
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READ NOW"Pressure on authorities to conduct burning activities without proper planning or impact minimisation has left two devastated birds of prey circling their nest site, screaming for their loss."
He was concerned the recent prescribed burn was "yet another example of humanity's hypocrisy and inability to be consistent with its own supposed laws".
"If we are serious about existing legislation to protect wildlife and animal welfare, then we as a society must act to ensure this legislation is adhered to."
Mr Cherriman said he was devastated when he discovered the prescribed burn reached 25m into the forest canopy in Mt Helena, killing the eaglets when they fell to the burning understory.
"Research has shown that eagle productivity in WA can be very low, and possibly only 10 per cent of birds which fledge from their nest will survive to adulthood," he said.
"Im not blaming the department," he said.
"They are doing their best."