Hi everyone, Does the flight of a Yellow-tailed Black-Cockatoo differ from that of a Glossy Black Cockatoo? The reason I ask is that I saw 2 Black Cockatoos flying over Neutral Bay yesterday morning around 8:30. I couldn’t tell what type of Cockatoo they were, but I thought at the time that their movements were very slow. Almost too slow to fly. I remember thinking at the time that perhaps they were flying slower than I remember seeing Yellow-tailed Cockatoos fly, and if that was true, then perhaps they might have been Glossies? So my question is, is there any way to tell by the flight of a Black Cockatoo what type it may be? Regards, Mark _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
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7 responses to “Black Cockatoos in flight”
From that very interesting paper: “Airspeed observations were obtained by ornithodolite …” I don’t know what that is, but I want one. Peter Shute Sent from my iPad _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
Thanks everyone for taking the time to answer my question. Regards, Mark Sent from Surface Pro Sent: Friday, 13 June 2014 14:03 that’s right Philip, I wouldn’t either… the markedly slower flight & deeper wing-beats of Yellow-taileds when compared to Glossy, or even Red-taileds, is rather obvious when u see both species fairly often, as Sandy has pointed out earlier. it actually is a good field character for discerning Yellow-taileds from Glossy, but the flight patterns of Red-taileds & Glossy would be too close to call with any accuracy I would say… I would assume that WA Carnaby’s would be similar to Yellow-taileds given their close relationship, but I’ve not seen Baudin’s often enough myself, without checking the books first. as for Baudin’s…I don’t know…??? cheers martin cachard, cairns _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
that’s right Philip, I wouldn’t either… the markedly slower flight & deeper wing-beats of Yellow-taileds when compared to Glossy, or even Red-taileds, is rather obvious when u see both species fairly often, as Sandy has pointed out earlier. it actually is a good field character for discerning Yellow-taileds from Glossy, but the flight patterns of Red-taileds & Glossy would be too close to call with any accuracy I would say… I would assume that WA Carnaby’s would be similar to Yellow-taileds given their close relationship, but I’ve not seen Baudin’s often enough myself, without checking the books first. as for Baudin’s…I don’t know…??? cheers martin cachard, cairns _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
Forshaw’s Australian Parrots book describes Glossy Black Cockatoo as: extremely buoyant flight with having slow, shallow wing beats, which differ markedly from the full flapping wing beats of the ….. YTBC………… So a different suggestion. Neither does directly mean that speed of flight is different. If it does it would not suggest that Glossy Black Cockatoo is the slower one, which was the question posed by Mark. I wouldn’t use slow flight as a feature to identify a Glossy Black Cockatoo cf YTBC. Philip —–Original Message—– Sandy Gilmore Sent: Friday, 13 June 2014 10:03 AM Hi everone, A very timely question since I frequently get Yellow-tailed Black Cockatoos flying over and infrequently get Glossy Cockatoos flying over. While enjoying the sunset a few days back I had both species fly over a few minutes apart and it was abundantly obvious that Glossy Cockatoos flap their wings at twice or more the rate of Yellow-tailed Black Cockatoos. This is in the situation where I presume both were returning to their night time roosts and were flying high over a mixture of forest and cleared paddocks. Aerodynamics experts would be able to explain this inter-specific difference based substantially on their relative body weights, and wing areas and wing spans. See http://jeb.biologists.org/content/150/1/171.full.pdf On another matter I have increased my White-throated Needletail sightings over summer by an order of magnitude, plus observing other interesting birds, by taking time to observe the sunset as often as possible. Cheers, Sandy Sandy Gilmore Arid Zone Ecologist Bush Heritage Australia “Morinda” 240 Mafeking Road, Goonengerry NSW 2482. Conservation Support Centre Level 5, 395 Collins Street, Melbourne Vic 3000 http://www.bushheritage.org.au T: +61(0)2 6684 9178 M: +61(0)427 686 985 [Description: Description: Description: N:Signatures2012 General Image.JPG] [http://www.bushheritage.org.au/images/email/email-footer.jpg%5D footer-img [PwC Transparency awards – Top 10 Finalist 2013. $5m to $30m category] Bush Heritage Australia was pleased to be recognised as one of the 10 finalists in the revenue $5m to $30m category in the 2013 PwC Transparency Awards for the quality and transparency of our reporting. _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
Hi everone, A very timely question since I frequently get Yellow-tailed Black Cockatoos flying over and infrequently get Glossy Cockatoos flying over. While enjoying the sunset a few days back I had both species fly over a few minutes apart and it was abundantly obvious that Glossy Cockatoos flap their wings at twice or more the rate of Yellow-tailed Black Cockatoos. This is in the situation where I presume both were returning to their night time roosts and were flying high over a mixture of forest and cleared paddocks. Aerodynamics experts would be able to explain this inter-specific difference based substantially on their relative body weights, and wing areas and wing spans. See http://jeb.biologists.org/content/150/1/171.full.pdf On another matter I have increased my White-throated Needletail sightings over summer by an order of magnitude, plus observing other interesting birds, by taking time to observe the sunset as often as possible. Cheers, Sandy Sandy Gilmore Arid Zone Ecologist Bush Heritage Australia “Morinda” 240 Mafeking Road, Goonengerry NSW 2482. Conservation Support Centre Level 5, 395 Collins Street, Melbourne Vic 3000 http://www.bushheritage.org.au T: +61(0)2 6684 9178 M: +61(0)427 686 985 [Description: Description: Description: N:Signatures2012 General Image.JPG] [http://www.bushheritage.org.au/images/email/email-footer.jpg%5D footer-img [PwC Transparency awards – Top 10 Finalist 2013. $5m to $30m category] Bush Heritage Australia was pleased to be recognised as one of the 10 finalists in the revenue $5m to $30m category in the 2013 PwC Transparency Awards for the quality and transparency of our reporting. _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
Hi Mark, YTBC’s are extremely active in Sydney at the moment. I have had large flocks of (40+) birds flying around Bronte and Waverley Cemetery (living up to their name Calyptorhynchus funereus). Cheers, Charles On Thursday, 12 June 2014 3:52 PM, Martin Butterfield <martinflab@gmail.com> wrote: From many of the flights of Yellow-tails I see around here (just outside Queanbeyan) if they flew any slower I think they’d fall out of the sky. They always remind me of films of WWII heavy bombers setting out on missions, seeming to crawl across the sky. Of course at other times (eg if a tasty pine plantation his in view) they can get a move on, but I’d b reluctant to make a call of ‘Glossy” based on slow flight. Martin Martin Butterfield http://franmart.blogspot.com.au/ On 12 June 2014 15:42, Youngs FamilyMail <youngsfamilymail@gmail.com> wrote: _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org
From many of the flights of Yellow-tails I see around here (just outside Queanbeyan) if they flew any slower I think they’d fall out of the sky. They always remind me of films of WWII heavy bombers setting out on missions, seeming to crawl across the sky. Of course at other times (eg if a tasty pine plantation his in view) they can get a move on, but I’d b reluctant to make a call of ‘Glossy” based on slow flight. Martin Martin Butterfield http://franmart.blogspot.com.au/ On 12 June 2014 15:42, Youngs FamilyMail <youngsfamilymail@gmail.com> wrote: _______________________________________________ Birding-Aus mailing list Birding-Aus@birding-aus.org To change settings or unsubscribe visit: http://birding-aus.org/mailman/listinfo/birding-aus_birding-aus.org