Chifley Chronicle #4
Last week of May 2006
There have been several interesting reports of birds in Canberra this week including a Blue-faced Honeyeater in the grounds of the Australian National University along with a Little Friarbird and, not far away in the centre of Canberra, at least 10 Brown Gerygone have been observed regularly in a rainforest gully section at the Australian National Botanic Gardens. All are a little exceptional as records from the Canberra region although the two honeyeaters occur west and south of the ACT and the Gerygone, a small warbler-like bird, occurs in suitable habitats to the east, specially at the nearby coast. Needless to say I have not chased after any of them.On Sunday last a fresh plumaged male Golden Whistler put in a brief appearance in my garden. This species is one of the most delightful and widespread of the genus Pachycephala (thick head). A genus that occurs through the indomalasian and Australasian regions and this particular species has many derivatives present as local endemics, specially on islands to the east and north of Australia but it does not not reach New Zealand. On several occasions during the week there have been many Red Wattlebird in the garden and I find that a Eucalypt, not many streets away to my south, is in particularly profuse flower. Its flowers are bright red but I am uncertain of the species of tree concerned. It is evidently a favoured site for the wattlebirds and up to 20 can be found at times feeding and squabbling in its branches. This happened on the one day this week I was able to go for my usual walk.
I found a curious hairy caterpillar in the garden this week and to the best of my ability I think it was a species of Anthela. The Anthelidae are very hairy caterpillars and often cause 'urticacious itch', as the irritation is called, if some of them are handled.
The Tidbinbilla Nature Reserve is about 45 mins drive west of Canberra (in the foothills of the Brindabella ranges). It is well know, if for nothing else, that pioneering work on the song of the Superb Lyrebird was done here in the late 1950s and earlry 1960s. In particular, detailed studies were made on the extraordinary mimicry that is included in the normal song of Superb Lyrebird or for that matter also for the only other extant lyrebird the Albert's Lyrebird of south-east Queensland. I had reason to go to Tidbinbilla twice this week.
On the way out on Thursday I saw three Wedge-tailed Eagle soaring above the road. I was a bit slow in trying to get a picture because they had rapidly gained hieght in a thermal by the time I was ready.
I was due to retrieve our sound sampling gear on Thursday following its installation the Wednesday before. However, there had been a fault in the setting up process resulting in no sample recordings being made. I brought the gear home and checked it out before returing the next day to set it up again for another week. We are trying to follow the course of recolonization by lyrebirds after the disastrous wildfires that swet through this area and a huge area of the surrounding forests in January 2003.
There was remarkably little in the way of bird activity this time at our recording site at Tidbinbilla or for that matter during the walk in and out from the nearby car park. I came across a small feeding party of Striated Thornbill and White-browed Scrub-wren; maybe 10 individuals, mostly thornbills. I heard one or two Spotted Pardalote and a White-throated Tree-creeper, a Grey Thrush. Some Galah were calling near the car park - an unusual species in this particular area of forest. Occasional calls from Pied Currawong were noted and a White-eared Honeyeater was heard distantly. Once in the hour that I was doing this job I heard the distinctive calls of a far off Superb Lyrebird but lyrebirds were certainly not as vocal as I had expected them to be at this time in the season. They are winter breeders and in general a fair bit of territorial activity might be expected by late May. It has been remarkably dry and such dry conditions may have put them back somewhat. I did little better the next day when the place seemed even more birdless. Again, there was no wind but I did hear some distant Sulphur-crested Cockatoo and the White-throated Tree-creeper. In adition a Grey Butcher-bird was vocal and because its calls came from different directions I judged that it might be moving through the valley or at the very least it was moving over a very large area.
Visiting the waterfowl ponds at Tidbinbilla on both days I was delighted to find a family party of Black Swan with three fluffy cygnets. The adults were upending to pull up submerged vegetation (a fine leafed species that I could not easily identify) which the cygnets scoffed eagerly each time it was dropped by the attending adult. The cygnets fed mostly with one adult, which I took to be the female, but certainly fed with the other individual of the pair on some ocasions - indicating that parental duties are shared. The adult would sometimes shake the bunch of uprooted grass before dropping it or the cynets would do the same as if to dislodge as much of the soil as possible before ingestion. On both days there was an attendant Dusky Moorhen or two taking advantage of the odd scap that got away from time to time. I am not all that familar with the growth rate of Black Swan cygnets but these young were certainly still all in down although well grown and some pin feathering may have been present under the down on the head suggesting that they were about 4-5 weeks old.
Upending to tear off the weed
Washing the weed

Note the attendant Dusky Moorhen eating some of the plant material

The attendant partner


Cute and fluffy cygnets
The drake Musk Duck on these ponds was occaionally causing strife amongst the Dusky Moorhen and Coot. He would set off in an obvious beligerant move in which he would rapidly cover a long distance underwater to surface only shallowly unlike his normal surfacing behaviour when diving for food. He would keep this low profile with head stretched forwards and dive again. The consequence of these 'runs' by the Musk Duck was that the Coot and Dusky Moorhen reacted by screaming loudly and dashing for cover or got out of the water. He did not actually attack any of them but I suspect he takes a toll on small chicks when young broods appear on this pond. Notwithstanding this possibility there were many Moorhen about and the family groups contained many young birds.
Note the attendant Dusky Moorhen eating some of the plant material

The attendant partner


Cute and fluffy cygnets



The drake Musk Duck

Musk Duck off on a menacing dive

Adult Dusky Moorhen - note lack of white tipped flank feathers
that are typically present in the Eurasian (Common) Moorhen

Dusky Moorhen - no blunt primaries showing
suggesting this is a first year bird


Young Dusky Moorhens - note pointed primaries visible in top picture!
Because some captive birds are held on these ponds it is difficult to say which are wild and which are not. Hardhead and Australian Pelican are captives but the Grey Teal and Australsian Little Grebe are clearly not. Nor are the 20-30 Pacific Black Duck present this week and for that matter the family of Black Swans. The Magpie Geese are free flying but originate from captive releases many years ago. The drake Musk Duck is also a pinioned individual of some several years. I do not know exactly how old he is but I suspect 7-8 years, at the least.
For me an interesting week.

































































