Christmas boobook lores and throat, yellow eyes, legs and feet. It is approximately 26–29 cm in length and 130-190 grams in weight with the female slightly larger than the male. The double-noted hoot, "boo-book," has a clucking quality with the second note usually lower in pitch. The begging call of juveniles is a high-pitched trill. Vocalisations are similar to those described for the Southern Boobook "N. novaeseelandiae" and include individual variation in advertisement calls. This may be useful in estimating owl densities as radio-tracking can be impractical in some terrains. A recording, courtesy of Richard Hill and Owl Pages http://www.owlpages.com/sounds/Ninox-natalis-2.mp3 Its natural
Australasian Agricultural and Resource Economics Society the Australasian Agricultural and Resource Economics Society. The Society publishes an academic journal, the "Australian Journal of Agricultural and Resource Economics". Until 1996, when it was combined with the "Review of Marketing and Agricultural Economics", the Journal was called the "Australian Journal of Agricultural Economics". Australasian Agricultural and Resource Economics Society The Australasian Agricultural and Resource Economics Society is an Australian professional association. It describes itself as "independent association of persons and organisations interested in agricultural, resource and environmental economics". The Society, then called the Australian Agricultural Economics Society was founded at a conference convened in Sydney in February 1957,