Regarded as one of the world's most unsafe birds, cassowaries stand up to 1.8 metres tall, weigh up to 60 kilograms and have a 10-centimetre, dagger-like claw on each foot.
The razor-clawed cassowary is one of among 100 exotic animals from the departed owner's estate going up for auction.
Grotjahn told the Times he believes Hajos may have been attempting to check on the bird's eggs, which may have initiated the attack and leaving the collector with fatal wounds.
On Saturday, Gulf Coast Livestock Auction will put the entire estate of Marvin Hajos up for sale.
The last human death caused by a cassowary was in April 1926, according Scientific American.
"My understanding is these birds are fairly shy around humans but if they are provoked or they have an opportunity they will be very aggressive", Taylor added. One of his two cassowaries attacked him through a fence, seriously injuring the 75 year old. "I've had them killed by alligators and snakes but never by a bird like that".
A bigger question was why Hajos had cassowaries in the first place. The spokesperson said that Hajos did not have a permit to keep the animals in his home because he "employed an agricultural exemption for his possession of cassowaries for agricultural use".
Per the New York Times, at the time of his death Hajos owned two adult cassowaries. "I know ostriches and emus have their moments, but cassowaries are an extremely, extremely risky bird".
A large, flightless exotic bird likened to a "living dinosaur" and infamous for killing its 75-year-old owner in Florida this month is back on the market. "They have no sense of humor". The auction will begin at noon, but don't think about bringing a camera - due to this kind of hype, they are restricted.
The auction house said on Facebook, "One of Marvin's wishes were his animals be sold at auction as soon as possible".
But organisers have said news media would be barred from the event.
"There will be no videoing in any part of portion in whole of this auction", Gulf Coast Livestock Organization wrote on Facebook. "Your video equipment may or may not be confiscated until all video recordings are [destroyed] Please do not [compromise] our position".
According to an interview with the New York Times, those investigating the incident were shocked.