I am so sorry for your loss. I cannot imagine how you feel, though I remember how I felt when I rushed Timber to the avian vet and didn't expect him to survive the night. People who do not own a parrot don't understand the special connection we develop with them. I've had and loved many pets over my many years, but until Timber I didn't understand the special connection I developed with him that I hadn't experienced before.
I'm sure you will grieve, just as we do when we lose a close family member. There will probably be harder days and easier days, and hopefully at some point you can begin remember the joy your bond brought Brutus and you more often than the crushing weight of loss.
God bless, my prayers are with you.