pet birds do not know how to survive in the wild. not only is it very unlikely that bird is native, but i'm also guessing it was a small bird like a parakeet. which are flock birds. let a little parrot out in a random country when all it knows is the safety of a human home and doesn't know to avoid predators and how to get food without even the protection of a flock .. it's going to die. sorry. it happens all the time. here's some quotes from simply looking up if its bad to release a pet bird; "People often believe it's symbolic to release doves (or white pigeons) to give them freedom, but in truth, it's a death sentence for a domestic bird. Domestic birds have neither the genes nor the developmental experience to survive in the wild." "It is unbelievable cruelty to "set a pet bird free." You are not "freeing" it, you are abandoning it to a terrible death, either a quick one at the talons of a hawk or falcon, or a slow, agonizing one as it dies of starvation and dehydration." "Birds that have been raised with humans simply do not know how to be wild birds. They are not accustomed to dealing with weather. They don't know how to look for their own food. They never learned how to watch out for predators, and if they lived in a house with a friendly cat or dog, they may make the deadly mistake of assuming any dog or cat is friendly. Because of all this, if you set one of these birds free, you would likely be sentencing him to a horrible death. Is that really better for the bird?"
AND SECOND; it's very uncommon for wild birds to be resold as pets in a common pet store. all the budgies and canaries you see are captive bred - you have to go out of ur way to find a wild caught one. as for the "they're better off in the wild and dead than in a cage" .. i just. lol you REEK of ignorance about pet birds. obviously i think it takes a very specific kind of person to properly take care of a bird, and they shouldn't be as easy to buy as they are, but if done right a domestic bird can be very happy. half of the time, the cage is just a roost. i have two birds, happy as ever, sing songs, one of them even flirts with me. their cage is just for sleep and for getting food. they play, get enrichment mimicking the wild, etc. that bird is not better of dead than with a person, if the owner was bad and kept it locked up like a decoration itd be best rehomed to a loving home not.. dead. yikes