The kiwi dollar is trading at its lowest levels in almost a month, having weakened this week after dairy product prices fell to a five-year low in the latest GlobalDairyTrade auction, led by a drop in whole milk powder.
"The New Zealand dollar is distinctly under pressure with that commodity story," Tuck said.
Ahead of US non-farm payrolls on Friday, financial markets are awaiting the European Central Bank's review of monetary policy tonight amid speculation it is closer to announcing an escalated policy of quantitative easing to revive the region's moribund economy.
"Everybody is talking about the ECB - it is the only game in town for the markets today," Tuck said. While there was a risk the ECB would announce plans to start buying bonds, ANZ Bank's house view was that it probably wouldn't make such a move until its January or March meetings, he said.
The local currency rose to 63 euro cents from 62.72 cents and fell to 49.43 British pence from 49.66 pence. It gained to 92.90 yen from 92.73 yen and fell to 92.21 Australian cents from 92.56 cents.