Four rescued birds were released into the rehabilitation aviary at the Ang Mo Kio Town Garden West on Friday morning.
This comes after months of treatment at the Jurong Bird Park (JBP), where the birds - two pairs of Black-naped Orioles and Pink-necked Green Pigeons - were nursed back to health.
Of the four birds, one Black-naped Oriole had sustained a broken wing. The other three were brought in to the Bird Park as chicks, where they were hand-raised by veterinarians until they were old enough to eat on their own.
The birds will remain in the aviary for seven days until they are accustomed to their surroundings. They will be allowed to fly out of the aviary and into the park on Nov 22.
The release of the rescued birds into the aviary marks the upcoming Native Birds' Day on Nov 23, which will be celebrated over the course of two days on Nov 23 and 24 at the JBP.
Spearheaded by JBP and supported by the National Parks Board and Nature Society Singapore, it hopes to cultivate a greater appreciation for native birds in Singaporeans.
Mr Lee Meng Tat, chief executive of Wildlife Reserves Singapore, said: "Jurong Bird Park is coming together with National Parks Board and Nature Society of Singapore to bring native birds to the fore so we can develop greater appreciation for them and to ensure they continue to thrive in the community."