https://mkg4583.wordpress.com/2009/09/01/mothers-abuse-children-3-times-more-than-dads-federal-hhs-statistics/amp/

http://www.news.com.au/lifestyle/parenting/kids/why-arent-we-talking-about-abusive-mums/news-story/629b48b93abd22be2b63f1344c0c5de6

"71 per cent of children killed by one parent are killed by their mothers, 60 per cent of those victims are boys."

Abusive mothers more common than abusive fathers.

"DHHS data in the UK shows that of children abused by one parent between 2001 and 2006, 70.6 per cent were abused by their mothers, 29.4 per cent were abused by their fathers."