The emptying of a second container of milk powder is also continuing and bags of milk powder will be removed from the wreck by helicopter, said MNZ.
Salvors yesterday maneuvered crane ship Smit Borneo alongside the bow of Rena, which remains firmly wedged on the Astrolabe Reef since the ship broke up.
The stern has mostly slipped beneath the waves.
Meanwhile, water and shoreline debris removal is continuing at Bowentown Heads and skips have been sent to the East Cape for debris disposal.
More oil has leaked from the wrecked container ship since it split in two but only small amounts were reaching the shoreline.
The number of live and dead oiled birds being collected around the Bay of Plenty was small, said oiled wildlife response manager Teri McClelland.
This was largely because the coast had received little oil, but also because the little blue penguins were in their moult period.
The wildlife response facility in Tauranga is being demobilised and any wildlife will be sent to Massey, Palmerston North for treatment.