On a side note, only humans are likely to associate these flowers with birds. This is something called simulacrum, which is like the illusion we witness while observing trompe-l'oeil paintings. Our eyes are being fooled into seeing a representation of an object that isn't actually present, in this case, the hummingbirds. The green birdflower was also featured as the in-season flower of the month by the Australian Botanic Gardens and Parks Authority.