Late on Saturday 3rd March, I briefly observed a ‘Little Grebe’ on some ephemeral water on Roebuck Plains near the Broome Bird Observatory. I have been out of email range since, so I haven’t been able to report. Chris Hassell from Broome looked for it shortly after I had seen it but ran out of light. He did see a grebe but could get little detail on it.
Chris and others searched for it on the Sunday morning. Nothing was found. The number of associated ducks (Grey Teal, Hardhead and Pacific Black Duck) had also dropped indicating that the waterfowl were moving around. It has not been seen since, but there hasn’t been much time for people to look.
The taxonomy is interesting. The IOC have now split Little Grebe, and the new species Tricoloured Grebe is the closest to the north of Australia, and hence it is very likely to be this species. BARC has been looking into the previous records of “Little Grebe” in Australia (Darwin & Qld) as to whether they are Tricoloured Grebes.
This is the first record for Western Australia.
I haven’t had time to look yet – What are the differences between Little Grebe and Tricoloured Grebe?
_________________________________________________________________ Frank O’Connor Birding WA http://birdingwa.iinet.net.au Phone : (08) 9386 5694 Email : foconnor@iinet.net.au
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Mike Carter 30 Canadian Bay Road Mount Eliza VIC 3930 Tel (03) 9787 7136
Frank, this issue was raised by Steve Potter last September. You should refer to the archives for that thread but to save you some time, here is what I had to say on the subject then.
‘It seems to me that this is not an entirely new split but in part a return to some good sense that prevailed prior to Peters 1931 Checklist. Firstly this change by the IOC affects the name that we call the three Australian reports but doesn’t add to the Australian list although is likely to add to personal lists. All were seen at the Darwin (Leanyer) Sewage works, the first in 1999, the second in 2008 and the third in 2009. Niven McCrie found the first and the second and the third was found by Guy Dutson. Only the first was submitted and endorsed by BARC so two submissions are awaited. For a non-migratory bird, I would accept the argument that on proximity grounds Tricoloured is the natural assumption to make regarding the species involved in the Australian reports but going on other cases, not all my BARC colleagues would agree. The 1999 submission suggested that based on geographical distribution that bird was most likely Tachybaptus ruficollis vulcanorum but if that subspecies proved invalid then it would be T. r. tricolor but stated ‘Race not known with certainty since most subspecies are apparently only separable by measurements and the amount of white on the secondaries’. In my assessment of that case, I argued that although that was true, we could narrow the field to just three subspecies, all of which inhabit Wallacea and the New Guinea region, T. r. tricolor, vulcanorum and collaris because the bird had deep RED EYES. Elsewhere Little Grebes have an iris that is yellow (e.g. China & Japan), brown or dark (e.g. Europe), but NONE are red. Judging by Adrian Boyle’s photo on http://www.pbase.com/wildlifeimages, the 2009 bird had bright red eyes, identical to the 1999 bird, (compare photos in Australian Birding March 2000, The Bird Observer December 1999 and Wingspan December 1999). The eye of the 2008 bird appears a little darker in somewhat smaller images by Rohan Clarke on that same website. Thus I claim that all these individuals derived from the population of ‘Little’ Grebes immediately to Australia’s north now known as TRICOLOURED GREBE. Note however that some of the taxa currently included in the Tricoloured complex have yellow eyes but the IOC list flags the likelihood that these will be split. If/when that happens, we will still know from which group the Australian vagrants derived’.
Mike Carter 30 Canadian Bay Road Mount Eliza VIC 3930 Tel (03) 9787 7136