Mr Walker said the society's submissions showed that development cut across layers of protection already in regional and local planning documents.
Furthermore, the fairy tern was listed as one of Auckland's "biodiversity jewels" in the Auckland Council draft Unitary Plan.
Opponents included the Forest & Bird Society, Historic Places Trust, Rodney Local Board, Environmental Defence Society, Surfbreak Protection Society and Auckland Conservation Board.
April 19 is the deadline for further submissions, which can support or oppose only the original submissions made in December.
Auckland City's regional and local planning manager, Penny Pirrit, said a council planner's report had to consider issues raised in both rounds and a formal hearing was unlikely to be held before July.
Developer Te Arai Coastal Lands Trust was backed by submitters which said the plan change would allow for economic benefit to the owner while safeguarding the environment.
In 2002, Te Uri o Hau Settlement Trust bought 616.6ha, with a pine forest, along the 5.3km stretch of coastal dunes of Te Arai Beach. It was bought with $5.2 million obtained as part of a Treaty of Waitangi settlement.
The trust owns 25 per cent of a joint-venture with developers Darby Partners. Supporting submissions said the plan would avoid development close to the coast and place sensitive and unprotected environmental areas in public ownership.
It would shield a 5.6ha wetland and plant native species of vegetation.
One proposal is for a buffer of 1km between development and the Department of Conservation wildlife sanctuary on the sand spit extending to Mangawhai Harbour entrance.
A plan change is not a resource consent but creates a position where a resource consent can be considered.
Te Arai beach development plans:
2002: Hapu buys $5.2 million coastal forest.
2005: Lodges district plan change for 1400-lot coastal community.
2006: Modifies for 850 lots.
2008: Redesigns for 180-lot coastal community.
2010: Talks to Auckland Regional Council about selling parts for reserve.
2011: Seeks private plan change for 46 rural residential lots.allotments.
2012: Further submissions close April 19.