For the first time in more than three months, visitors were walking along the trails at Seneca Park Zoo on Friday morning.
The zoo opened only for members. The public will be welcomed back on Sunday.
To limit overcrowding, visitors have to make online reservations, and 125 people will be allowed through the gate every half-hour. Acting zoo director David Hamilton said Friday's schedule was sold out, with 1,625 zoo members registering for tickets.
Once inside, everyone over the age of 2 is required to wear a mask and follow a one-way path through the exhibits.