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 Wireless Australasian Wireless Australasian Wireless relates to two separate entities Australasian Wireless Limited and Australasian Wireless Company Limited. The former obtained an option to acquire the exclusive rights to the Telefunken wireless telegraphy system in Australasia, the latter acquired those rights and with public capital developed a firm which was successful in supplying wireless telegraphy equipment to shipping in Australasian waters and the establishment of Australia's first coastal radio stations. When the Australian Government decided to complete the remainder of the coastal network using the Balsillie wireless system manufactured by Father Archibald Shaw, AWCL merged with Marconi interests to form Amalgamated