Red-collared lorikeets in Australia exhibit signs of drunkenness at the end of the rainy season, most likely brought on by drinking fermented nectar. They behave much the way humans do when inebriated only with a little less screeching and more flapping of wings. The only thing sadder than a drunken lorikeek is a lorikeet with a massive hangover from swilling plonk. Sweetened porridge and fresh fruit for breakfast the morning after sets them straight.
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They were attempting a joke of some sort. Less screeching than drunk humans and less screeching than when they are sober. They are quite raucous. Or is that racos in American?