|Great Egret Ardea modesta alighting, Jerrabomberra Wetlands, Canberra.|
The alulae can be seen half way along the top edge of each wing on the 'elbow',
little clumps of three to six feathers which can be raised as required.
|Andean Condor Vultur gryphus, Torres del Paine NP, Chilean Patagonia.|
Everything is spread - wings, tail, feet - to maximise drag, and the alula visible on the left wing
is erected to minimise the turbulence created.
|Welcome Swallow Hirundo neoxena, alighting to feed dependent young, Canberra.|
|Great-winged Petrel Pterodroma macroptera landing at sea off Wollongong, New South Wales.|
(Old scanned slide - sorry.)
|Australian Kestrel hovering near Canberra. Again, all feathers are working hard here, including the obvious alulae.|