Visitors of Adelaide Botanic Gardens, South Australia, have recently been disturbed by loud noises. Rainbow lorikeets, known for their distinctly screeches, are getting drunk and having fun.

It happens every year when the crimson flowers of the Schotia brachypetala, blooms in late spring through early summer.

The flowers of those trees, also known as Drunken Parrot Tree, contain a fermented nectar, which rainbow lorikeets love to consume. 

It causes the birds to feel the same effect as humans do from alcohol. The lorikeets are getting intoxicated, even to the point of falling down from trees. The similarities do not end on their behavior though, as they can also even feel hangovers the next day.