The parakeets are absolutely an invasive species, but I'm not sure how toxic they are; they're thriving, but not sure if they've really affected other wildlife. It's just very strange seeing a bright green bird in grey London.
In tragedy, we find the worst of humanity. We also find the best of humanity. We find strength, real strength in hope. When the happy ending is not provided, we must create one for ourselves. We aren't past it, we aren't over it, but even just going on living is an act of defiance. An act of rebellion, a middle finger to all those assholes striving so hard to take away everything you are and kill you.