A fight between two male cassowaries has been captured in a far north Queensland rainforest. The battle of brawn and dominance was brought on by the rising tensions of the cassowary mating season.

"Then it was all over, one look from Hagar and Hero retreated. Hagar returned to his chick Rainbow." (Supplied: Yvonne Cunningham)

"The cassowaries separated. Hagar started to pace around Hero. Little Rainbow, silent during the conflict ran up to his father." (Supplied: Yvonne Cunningham)

"I wasn't at all frightened because they didn't notice me, they didn't see me, and I was just watching their natural behaviour." (Supplied: Yvonne Cunningham)

"Hagar jumped into the air, legs flying and kicking, and threw himself against Hero." (Supplied: Yvonne Cunningham)

"The two male cassowaries faced off at each other, little Rainbow standing behind his dad. The cassowaries took turns in pulling angrily at their neck feathers. Then Hagar backed down into the rainforest as if he had decided to retreat. It was a bluff, Hagar ran at Hero with extraordinary speed." (Supplied: Yvonne Cunningham)

"Hagar bent his head, opened his mouth sucked in air and started drumming loudly at Hero. It would have been a territorial battle, Hagar and Hero's territories crossover in the Moresby Range National Park." (Supplied: Yvonne Cunningham)

Ms Cunningham says the drumming is often a sign of conflict between cassowaries. "Then suddenly the cassowary known as Hagar [pictured] emerged from the rainforest and faced up to Hero threateningly," said Ms Cunningham. (Supplied: Yvonne Cunningham)

"He opened his mouth, as if to draw air into his lungs, he displayed angrily and aggressively, emitting low frequency drumming sounds. Even when I could not hear the drumming, I could feel it, it was vibrating my body, it was really quite an amazing feeling." (Supplied: Yvonne Cunningham)

While visiting a friend at the top of Innisfail's Moresby Range, Yvonne Cunningham heard the drumming sounds of a male cassowary in the rainforest behind the house. "I saw the cassowary known as Hero [pictured], with his feathers fluffed and his head bent down," said Ms Cunningham. (Supplied: Yvonne Cunningham)

Ms Cunningham says the mating season has begun for cassowaries and people should keep their distance.

"They are mating and their hormones are flying and they could be unpredictable," she said.

"The males are competing for territorial areas, competing for females and it is also young cassowaries trying to find their new territories, so there is lots of chasing and encounters."

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