"The purpose of the special season is to disperse the birds and also to slightly reduce their numbers," Mr Teal said.
The special 14-day season started last weekend with hours being limited from 6.30am to 8.30pm each day with a daily limit bag of five paradise ducks.
Reports received by Fish and Game actually show that there are fewer paradise ducks overall than was anticipated but there was still a need to disperse large mobs from cropping areas.
To legally participate in the shoot, hunters must be the holder of a 2011 game bird hunting licence or be eligible to hunt on a property as a "legal occupier" of the land.
The short, special season applies only to paradise ducks and all other game birds remain protected at this time of the year.
Mr Teal said the special season incorporates not only Wairarapa but also Manawatu and hunters are advised to check the Game Bird Hunting Regulations to make sure they are hunting in an area covered by the special season.
Paradise shelducks - commonly known as paradise ducks - are large goose-like duck endemic to New Zealand.
They usually forage grass and weeds in pairs but are crop raiders when molting.
Paradise ducks are also territorial and stoutly defend their territory when challenged.