![]() It then walked a few steps away and proceeded to drop the gumnut without eating it. It’s a kind of dance cockatoos do when they listen. I have observed this behavior in pet cockatoos they start jumping and moving their head. They start jumping and moving their head when they are too excited. If they are too excited, they raise their crest and make a lot of joyful sounds. “A juvenile from the second group made a beeline to the female in the first group and attempted to steal the gumnut she was eating. When excited, they look very active and make sounds. All of a sudden another family group flew in, calling to announce their arrival,” Erika says. “I was watching a family group of cockatoos feeding in a marri, happily chomping away on the large gumnuts. Erika’s favourite is her ‘Nut Theft’ story. Over her studies, Erika has seen some of their complex social behaviours play out. Their sulphur yellow crests can be held folded down or erected on their heads. The feature that gave them their name is the beautiful crest of feathers, colored in yellow, placed at the top of their heads. “Growing up near Canberra we would have yellow-tails visit our pine trees a few times a year and I’d run outside as soon as I heard them coming,” she says.Įrika now lives in Perth where much of her studies have focused on the forest red-tailed black cockatoo species ( Calyptorhynchus banksii naso ) in south-western WA, many of which have taken up residency in metropolitan areas. Image Source Sulphur-crested cockatoos are primarily white in terms of color. Black cockatoo expert Erika Roper from the University of Western Australia has been working with these birds for four years, but has had a lifetime affinity with them. ![]()
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