The thing is most can not survive! Why do you think birds migrate? Part of the reason is food! Plus the predatory birds and the other wild birds attack them first because they're not from here. There's PLENTY of parakeets and Cockatiels that escape out here ALL the time, there's absolutely no population of them here outside. Yes I know birds can learn to tolerate, like I've said I keep my house on the cooler side. I know they can live in aviaries outside, BUT as you said, providing the proper shelter is the key! I've been to the botanical garden in Des Moines, they keep breeding parakeets, finches, etc within, it's amazing to walk in to see. BUT when they place a few Cockatiels within, they had to be removed cause they weren't thriving as they should, but a different Cockatiel may do better....Yes that would be the gene to pass on! But I think it's cruel to place them outside in a foreign land where they do not belong and test their bodies with the temperature. IS it a have to thing to do? NO! People do trial and error! IF you loose your two favorite bird outside because of frost, it's your own doing and should be the one to be blamed! When it comes to trial and error when their life is concerned, I do NOT believe in that sort of thing unless it's an absolute have to type of deal to better the bird's life!!!!
What is your point on migration? You mention food? I don't know of any parrots that do mass migrations (May move a few 100kms to feeding grounds, but that's about the extent of it) I could be wrong, but eh. I don't see the point you are trying to make? Is it migrating birds are non native (because that is incorrect, if they naturally migrate they are naturally part of that ecosystem, even if only for a limited time)? How does that relate to feral parrots? You claim migrating animals are attacked more? I would like to see evidence of that first. And how does it relate to this? Migrating animals are not a parallel for feral populations of parrots.
I think you need to realise what people are saying. The general consensus here seems to be keeping birds inside, even if cool= good. Keeping them outside in proper housing and properly acclimatised=ok. Keeping them outside exposed to the elements =bad. No one is making that an argument, but they are, however, trying to stop the whole 'keeping a bird in a cool house' risk being blown out of proportion.
No one is advocating taking non native birds and releasing them or exposing them to the elements. It was a biological discussion on the genetic dynamics of such groups for anyone who may be interested as to WHY they survive better then captive birds, and why they are not a good comparison as a result.
As for the cockatiels in the gardens, then their avairy was probably not adequate for those birds and they were not getting the required set up. Finches have different requirements and tolerances to cockatiels, and slapping some in an aviary with them is not a good idea unless you have given the cockatiels adequate space geared to their needs. If so, they shouldn't have had a problem. I would like to see their setup though, before I make those judgements.
As for the part I highlighted in
red, the person who lost their birds was violently ill and forgot (suffered from mid stage dementia in addition to her physical illness). I doubt she could get physically outside to pull down the wind sheeting/frost covers on the cage anyway by that stage. She died recently after.
You would blame a woman with dementia, who was INCAPABLE of remembering for this? If so, that is disgusting. It is immensely disrespectful for you to assume something and place the blame on her not knowing the situation at all. I repeat- This poor woman suffered from dementia. My mother answered her ad and acquired her last cockatiel after (we already had one at the time) to prevent this from happening again, but how can you blame someone with dementia for forgetting to cover her birds?
She was mentally incapable. If anything it was her families fault for not doing something sooner. Don't judge someone, ever, until you know the whole situation. I have absolutely no respect for people who do.