You would think that Staten Island has plenty of room to share space with wildlife.

After all, it is New York City’s least populous borough, with three times fewer residents than Manhattan, and half the city’s parkland is on Staten Island.

Yet the way locals describe it, the borough is ground zero for unwanted visitors who are proliferating so abundantly that they turning into urban pests.

First, there are the deer — many of whom, residents say, swim across from New Jersey — and eat seedlings, damage woodlands and cause dozens of collisions with drivers every year. Then there are wild turkeys, which can be aggressive and trample over yards, and feral cats that urinate on lawns, leaving foul odors.

“They’re pretty rough,” said Rob Sosa, 51, who says he has spent a small fortune on cameras and a high-tech sprinkler to scare off the deer and turkeys that invade his property with impunity. “We’re alarmed.’’