An Adelaide man has been found guilty of recklessly causing harm to his newborn baby by violently shaking her.
WARNING: This story contains graphic content that readers may find distressing.
Daniel James Morgan caused head injuries and life-threatening harm to his daughter at their home in Paralowie, in Adelaide's north, in 2018.
The girl was "deeply unconscious" when paramedics arrived in the afternoon.
She suffered concussion and brain haemorrhages.
She was taken to the Lyell McEwin Hospital before being transferred to the Women's and Children's Hospital, where she remained for more than a week.
Morgan pleaded not guilty in the District Court to recklessly causing harm, claiming he had accidentally fallen on his infant daughter while she was sleeping on a mattress in the living room.
But Judge Liesl Chapman rejected that version, finding Morgan violently shook the 11-week-old.
"No matter how sudden or fleeting the accused's act may have been, and even if he came to quickly regret his behaviour, the evidence establishes that the accused acted deliberately and violently towards his infant daughter.
"[He] was at the time of that act aware of the substantial risk that his conduct would result in serious harm to her, which it did.
"It caused life-threatening harm."
Judge Chapman said the baby's injuries were not "consistent with crushing".
Baby previously 'quite happy'
The court previously heard the baby was healthy and "quite happy, very alert and settled" when she was left alone in Morgan's care that day.
She had been fed and Morgan "didn't have anything to do besides watch the baby" but the court heard he found it difficult to read the baby's cues.
After the incident, Morgan rang triple-0 telling the operator, "all of a sudden she's just stopped breathing … just like she's not alert".
He followed up by saying he was cleaning and "I fell down and I put my hand down and I don't know if I fell on her or the pillow".
Morgan also rang the baby's mother, saying: "You need to come home or need to come to the hospital now. Something's happened."
Morgan was remanded in custody to face court again next month.
