The Loyang Hornbills had been people-watching at one of their favourite spots when a kind stranger offered them a bit of yellow goodness that quickly became their new favourite food. It was sweet with a hint of sourness, and at the same time fluffy yet firm. The Hornbills had tried to eat clouds before, but the clouds had somehow always gotten away. But this new food was a pretty good substitute: it was a bit like eating a sweet creamy cloud that had somehow solidified and fallen to the ground. It was perfectly understandable why the Hornbills would go bananas for bananas.
Contrary to the uncivilised slur 'bird-brain', the Hornbills had a decent memory, not least when it came to debts, so naturally they mentally placed the banana-debt on their bill and waited for a chance to pay it. And their chance came later that evening.
The Stranger had just polished off a zi char dinner together with some friends when the group suddenly stood up and hurriedly left. No doubt some very urgent business, the Hornbills thought, whilst observing quietly from a distance.
But what about the unfinished food and trays? Not willing to see their banana-benefactor be fined $300 for failing to return his tray, the Hornbills stepped in. After snapping up the leftovers, the Hornbills paired up up and use their giant beaks to support each end of the tray so as to skilfully air-lift each tray to the tray return station. With that accomplished, they settled down at the table to do some final clean-up and check the ground for any scraps that might have escaped.
Note: the above blurb is not intended in any way to encourage feeding of wild animals. It is purely fictional and you should not seek to re-enact the events described any more than you should embark on a candy-sorting career after clearing the 10,000th level on Candy Crush. Feeding wild animals is bad for them. It can encourage animals to permanently change their behaviour and become dependent on human food. They may also become aggressive towards humans, increasing the risk of violent human-wildlife conflict.