Selector Rod Marsh said while the batting line-up picked itself, it was a matter of choosing the best bowlers for the conditions expected in Wellington and Christchurch.
"It's a matter of horses for courses; we think the conditions in New Zealand will suit Chadd," Marsh said of the 28-year-old who has 145 first-class wickets at 24.82.
"He can bowl. He thoroughly deserves his selection," Marsh said, adding that speed was not the only selection criteria.
Marsh said both Sayers and Bird could "swing the ball and operate at a lively pace".
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"Our fast bowling depth is certainly being tested because of injury and retirement," he said.
"But the positive part of that is it means there are opportunities for other players to stand up in domestic cricket and stake their claims."
Feared paceman Mitchell Johnson, 34, quit international cricket in November, following Ryan Harris's retirement, while Mitchell Starc and Pat Cummins are sidelined by injury.
Marsh said he was hopeful Pattinson would recover in time for New Zealand, and Siddle was "on the verge of playing again".
Australia dominated the West Indies in their most recent Test campaign at home, trouncing the tourists in the first two Tests before the final rain-affected match ended in a draw.
Steve Smith's team faced stiffer competition from New Zealand in November, but clinched a 2-0 win in the three-match Test series.
McCullum a victorious send-off from internationals, he added.
Marsh said Australia were aware that a series win in New Zealand would lift them to the top spot in rankings.
"The fact that we can move back to the top of the ICC Rankings if we win the series is an added incentive for us," he said.
"But the players will be hungry to do well and we are anticipating a tough but also, hopefully, a successful series."
Australia play Tests against New Zealand in Wellington from February 12 and Christchurch from February 20.
Australia: Steve Smith (capt), David Warner, Joe Burns, Usman Khawaja, Adam Voges, Mitchell Marsh, Peter Nevill, James Pattinson, Peter Siddle, Josh Hazlewood, Nathan Lyon, Jackson Bird, Shaun Marsh, Chadd Sayers.