The pet cassowary - boasting long, dagger-like claws, standing as tall as a tallish person and sporting a truly foul disposition - will be auctioned Saturday, .
Hajos was raising the flightless bird, which has a blue face and a ridge atop its head, and other exotic animals on his property in Alachua County in the north-central part of Florida.
He died 12 April when he fell near the cassowary pen and was attacked by the bird.
A total of around 90 animals that Hajos owned will be auctioned off, said Scotty Wilson, the auctioneer at Gulf Coast Livestock Auction in Madison, Florida.
They include brightly coloured macaws and critters called marmosets, or pocket monkeys, primates which are only 13 to 15cm long, said Mr Wilson, who knew Hajos for years.
A cassowary at Sydney Wild Life Zoo. Source: AAP
"Marvin was a very beloved figure and the exotic animal community around here is small but close-knit. So I imagine we will have a strong turnout for the auction," he told AFP.
There is no starting price set for the cassowary and Wilson declined to say how much it might fetch.
In the event no one wants it, several conservation groups have already told the auction house they will take care of the cassowary.
Mr Wilson said proceeds will go to Hajos' widow and family.
"Marvin left instructions to the effect that if anything ever happened to him, the animals were to be sold immediately because she did not have the means to take care of them," he said.
Cassowaries are the world's most dangerous bird, according to the San Diego Zoo website.
They are similar to emus, can grow to nearly six foot tall and weigh up to 75 kilos, in the case of females and somewhat less for males, according to the website.
With powerful legs, they can jump seven feet straight up in the air. Only ostriches are heavier in the world of birds. Cassowaries can run up to 31 miles per hour.
The birds are native to Australia and New Guinea.
