Warner has struggled for form in the recent ODI series against
England but Southee expects leadership to bring the best out of the
Australia's usual vice-captain led the Sunrisers Hyderabad to the IPL
title in 2016 and in the same year captained Australia to T20I series
win in Sri Lanka when Steve Smith took a rest.
"He's obviously had a bit of experience in
the IPL captaining T20 sides, so I'm sure he'll be aggressive," Southee told the media.
"I'm sure the Australian way will still come through under David's captaincy."
Southee feels that the Black Caps will need to be at their best to
negate the threat of Warner even if he is coming through a lean patch.
"He's a class player, he's shown that over a long period of time and good players don't stay down for too long," said the Black Caps bowler.
"We know that we're going to have to be on top of our game to stay on top of him."
New Zealand had a disappointing end to their series against Pakistan which saw them slip from their number one ranking.
The Black Caps lost the last two games having had Pakistan on the
ropes when they won the opener on the heels of a 5-0 win in the ODI
Southee wants the team to pick themselves up for their clashes with Australia and England.
"I think the execution with the ball in those last two games probably haven't been where we have throughout the summer," said Southee.
"That's probably one thing from a bowling point of view that we
probably will work a little bit harder on over the next couple of days
"We played some good cricket throughout the summer, the last couple
of games haven't been our best, but the beauty of the side is we don't
ride the emotions that can come with winning and losing."
First T20I Australia v NZ, SCG, February 3.
Second T20I Australia v England, Blundstone Arena, February 7.
Third T20I Australia v England, MCG, February 10.
Fourth T20I NZ v England, Wellington, February 14
Fifth T20I NZ v Australia, Eden Park, February 16
Sixth T20I NZ v England, Seddon Park, February 18
Final TBC, Eden Park, February 21