About 100 mourners formed a ring around a tiny white coffin, tractor and car stickers dotting its lid.

A spinning windmill, a pot of yellow daisies and an assortment of teddies accompanied the baby boy who was abandoned in a South Auckland park last November.

Members of the Mangere community gathered this afternoon at the Mangere Lawn Cemetery to farewell baby Mona. The baby boy was given that name after a man walking his dog discovered the body of the infant at a reserve near Mona Ave, Mangere.

The service, led by Father Michael Endemann, took place despite a heavy downpour.

It was funded by community members who wanted to give the child a proper goodbye.

Mangere MP Aupito William Sio addressed the service's attendees, and thanked them for their love and support.

"Everything that has taken place today is a result of people wanting to make sure that the baby would be properly buried...Thank you to everyone who has come forward and who has shown their love, their care and their desire for this service to take place."

The baby's mother was unknown, but Sio said they didn't want to bury the child without recognising he belonged to someone.

"That little life is precious."

Sio said as a father of "six beautiful daughters", the incident offered an opportunity to reflect on parenting.