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 College of Tropical Medicine Australasian College of Tropical Medicine The Australasian College of Tropical Medicine (ACTM) is an Australasian medical association. It was founded on 29 May 1991 at a meeting of 10 interested clinicians, scientists and researchers at the Anton Breinl Centre in Townsville, Australia. Professor Peter A. Leggat, the College's Inaugural Honorary Secretary (1991–96), and Professor Rick Speare, the College's Inaugural President (1991–96), are generally acknowledged as the founder and co-founder of the College, respectively. Rick Speare passed the presidency on to Professor Peter A. Leggat (1996–98), who went on to serve a further two terms as President (2002–04 and 2006–08). Other