I saw my first two White-throated Needletails for this season this morning while participating in a monthly bird survey at Eatons Crossing, SEQ. They were following the upstream course of the South Pine River. The co-ords were S27 20’53.0″ and E152 56’35.8′ Saddened to read that the status of WTNTs is now declared as vulnerable. — Marie Tarrant Kobble Creek, Qld On 14 October 2015 at 07:20, Michael Tarburton < tarburton.m@optusnet.com.au> wrote: > G’day Bird Enthusiasts > > Stephen Garnett has just informed me that the WTNT has been declared > Vulnerable. Thank you all for helping to collect the data to make this > declaration. Here are the details: > > White-throated Needletail Hirundapus caudacutus caudacutus > Listed in Australia as Vulnerable A2b+3b+4b > Evidence has been presented in Tarburton (2014) that there has been a > decline in the migratory subspecies exceeding 30%. This decline has been > corroborated using a number of independent data sources. It has been > attributed primarily to habitat loss in the breeding grounds. Only > Criterion A can apply as the subspecies occurs over too large an area for > Criterion B, is too numerous for Criteria C and D and has not been modelled > in a manner suitable for Criterion E. The rapid decline has been occurring > over a long period so this probably counts as a correction to the 2010 > Action Plan, but listing probably could not be justified for 1992 or 2000. > At this stage only criteria A2b+3b+4b apply – declines of 30-50% in 3 > generations (25.5 years) based on an index of abundance appropriate to the > taxon. The suggestion that the decline is caused by habitat loss, though > likely, is still a little speculative to warrant A2c. > > > As a result of sending my last Annual report on WTNT, Alastair Smith has > requested that I mention how many of my records come from eBird, so to be > fair I have dug out all group resources and hope I have not missed any. > These are the number of observations from each source – and of course there > are many sightings reported in more than one location. Sources are (in > alphabetical order): > animalfineartbycheryl-ann.com (1), Bellingen Birders per Richard Jordan > (12), Billandsuedownunder.blogspot.com.au/ (1), Biocache (10), > Birding-Aus (44), BLAtlas (112), Birdlife Goldcoast per John Allsop (11), > BL East Gippsland per Chris Healey (50), Birding NSW per Tom Wilson (1), > Birdline & Birdline rejects thankfully sent on to me (118), Birds WA (1), > Blue Mtns B.O. -Mark Ley (31), BQ per Brian Tynan (2), Cairns Birds (3), > Canberra Birds/COG per Mark Clayton (17), Direct (1752), e-Bird (767), > Eremaea Birdline (126), FSCB-Barbara Jones (36), geoffpark.wordpress.com > (1), Hunterbirding (40), per other intermediary (172), The Twitcher per > Alan Morris (21), > > > Please have a great Swift season, & I look forward to receiving this > season’s results. > > Mike > =================== > Michael Tarburton > tarburton.m@optusnet.com.au > =================== > > >
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