Palm 'Too sources

Image: https://s-media-cache-ak0.pinimg.com/736x/5b/72/ee/5b72eeb32457ecb11cca3ffa8f9c018d.jpg

Reference:
i. http://www.tandfonline.com/doi/abs/10.1080/09524622.2015.1070281#.VeqTPhHBzGc
ii. http://www.christinazdenek.com/wp-content/uploads/2012/12/CNZs_Palm_Cockatoo_thesis_12smaller.pdf
iii. http://aainsects.com.au/Pdf-papers-aainsects/Bird/bird-Cacat-3.pdf