"Australian National Botanic Gardens". Canberra Ornithologists Group. Retrieved 12 February 2016. There are usually White-winged Choughs stealing scraps from the tables.
Boland CRJ, Heinsohn R, Cockburn A (1997). "Deception by helpers in cooperatively breeding white-winged choughs and its experimental manipulation. (abstract)". Behavioral Ecology and Sociobiology. 41 (4): 251–56. doi:10.1007/s002650050386. S2CID1171999.
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Kaplan, G. (2015) Bird Minds: Cognition and Behaviour of Australian Native Birds, CSIRO Publishing, ISBN9781486300181[1]
Boland CRJ, Heinsohn R, Cockburn A (1997). "Deception by helpers in cooperatively breeding white-winged choughs and its experimental manipulation. (abstract)". Behavioral Ecology and Sociobiology. 41 (4): 251–56. doi:10.1007/s002650050386. S2CID1171999.