Thursday 28 March 2013

Autumn Frogmouths

Tawny Frogmouths can be very difficult to see when roosting quietly up in the branches
We are well into autumn in Canberra now and the Tawny Frogmouths are even more tricky to find than in spring or summer. They can be anywhere in their home ranges, but this adult male and juvenile were still within a hundred metres of last year's nest. I couldn't find the adult female. I had expected the youngsters to have left their family groups by now, as this is often the time of year when resident birds establish or confirm their pair-bonds and territories. I thought I would find the birds in their favourite winter roost by now, the ones which are better exposed to morning sun and out of the cold south-west wind. This branch was in the sun, but higher up, about 15 m,  and more hidden than the winter roost.


The adult male, on the left, sits comfortably, partially fluffed up as he basks in the sun, while the young bird is a bit more secretive, taking on a partial branch-pose for camouflage. The adult bird has seen me many times before, so is probably less afraid of me.


The young bird is identified as such by her scruffy moustache and eyebrows, and her nasal bristles are not as finely developed as those of a bird in full adult plumage. She is definitely a  female as she has taken on a rusty colouring to her wing coverts. Males are more uniform grey.

Monday 18 March 2013

Red Wattlebird


It is autumn now and the our local garden Red Wattlebird Anthochaera carunculata is re-affirming his ownership of the nectar-bearing plants, especially the grevilleas. This will be his main food supply throughout autumn and winter and whenever he sees another bird in one of these bushes he chases them well away. This the largest mainland honeyeater measuring up to 360mm in length, and when in pursuit of smaller birds, with determination in their eye, they look very like a sparrowhawk. Their name derives from the pairs of red wattles which hang from their cheeks, and they also have a splendid lemon-yellow belly. As with all honeyeaters they have specially adapted brush-tipped tongues for lapping up nectar and they are important pollinators in Australia.


Being large and heavy does have some drawbacks though, and they do have to stretch to reach the farthest flowerheads. Like this one outside the office window.


Friday 1 March 2013

'a refreshing and fascinating book' 



The British Trust for Ornithology have just published a review of my book Eagle Days in their monthly newsletter, BTO News. This seems a long time since its publication, but I have no problem with that as it is yet another very favourable review. Once again I am fascinated by the details which each reviewer has chosen to highlight. This reviewer, anonymous, picked up on the poetic aspect of both the text and photographs, using such phrases as:

`has a quality which brings colour and life to the broader landscape in which the eagles are to be found'

`well illustrated by Stuart's own photographs'

while they still picked up the core message:

`the need for such fieldwork to be undertaken'



Tuesday 26 February 2013

Young pigeons

A first year Common Bronzewing Phaps chalcoptera
On the weekend I was out mist-netting birds at Charcoal Tank Nature Reserve, NSW, helping Mark Clayton with a long term cooperative bird banding study. As it is now late summer almost autumn, the birds there have all finished breeding and the birds caught were a mix of adult and birds of the year. I am in the process of putting together an online guide to aging and sexing woodland birds of South-east Australia, based on photographs taken of birds in the hand, prior to release after banding them. And this trip provided a chance to photograph young pigeons as we caught examples of Common Bronzewing and Peaceful Dove.  

The young bronzewing, which would have hatched last spring, differs from the adult in still  having a soft bill, especially the cere above the nostrils. This is a residual feature of squabs, young pigeons,which have large wide and soft bills. An adult bronzewing has a hard bill and the cere is less spongy. This young bird was probably a male as there are some chestnut coloured feathers growing into the sides of the crown - adult females do not have such well coloured heads. The adult male also has a bright pale forehead and there seems to be signs of such growing into the young birds head.

An adult male Common Bronzewing

A first year Peaceful Dove Geopelia placida
The young Peaceful Dove was instantly recognisable by its generally dull plumage compared with that of an adult, which cannot be sexed on plumage. The adult bird has a smart blue-grey forehead, chin and cheeks, and boldly marked black and white bars on its breast. The young bird has a white/buff speckled head, and the barring is of brown, buff-tipped feathers.Also, the young bird has only a faint blue ring of bare skin around its eye, while that of the adult is bright, together with the prominent blue cere and irides. Again, the young bird has a soft bill, especially the cere, and the adult has a a hard, worn and flaky appearance, through wear and tear after years of foraging.  

An adult Peaceful Dove

Tuesday 19 February 2013

The Nature Conservancy
Australia

I have added a link to The Nature Conservancy, Australia to the list of associated websites on the right of this column. Please click on  http://www.natureaustralia.org.au/ and have a read though to see just what they are doing and needs to be done to secure a future for wildlife and wildplaces in Australia.