Right. It had never crossed my mind that he could forget me, unless there's a Grey version of dementia.
Not parrot related, so please forgive me; but one of my most satisfying "yes, animals have memories, too" experiences was with my best mare (had her from when I was 14 until she passed when I was 31). Now granted, this mare was off the high end of most charts, but this moment stood out:
I had just moved her to a new pasture closer to my new home (she was 22 at the time), and the property owner wasn't too experienced with horses or their behavior, so he invited all his friends to see the new addition on the day of her arrival, without informing me that there would be a welcoming party.
I pull up with the trailer, and my mare is none too pleased, *at all*, to be greeted by an entire crowd of new people. She exits the trailer with an angry flourish and promptly goes into full blown show-off fake tantrum mode (strong, ancient Arab/Saddlebred lines, so she's a pro at showy tantrums).
She's successfully scaring the crap out of everyone watching, who all expected some old, used-up mare, and she and I are just having a blast.
I'm letting her scream and run in circles around me, she's doing her best demon impression: teeth bared, nostrils flaring, neck tense and high, eyes rolling, legs flashing, effortlessy gliding, and everyone just keeps backing further and further away. (I was in control at all times, this was not unsafe, and no one, including myself or my mare was in any danger. Purely psychological fear, no physical threat or chance of injury- just to be clear. This was typical of her. All show. If I had asked her to stand she would have calmed it down to slowly trotting in place instantly.)
Then all of a sudden she just stops and stares at one lady. The stare lasted maybe a split second, and back into show-off mode she goes, but it grabbed my attention as it was totally out of character. A few minutes later I grill the woman my mare singled out, and it turned out she met her once, just prior to my purchasing her, to try her out. The entire test run had lasted five minutes before the lady decided the mare was too hot for her and declined.
So, my mare remembered her from one brief test drive eleven years prior.
So, yeah, never doubted Willy would recognize me immediately.