I most often write about the flora and fauna of the wetter, more higher elevations of the Wombat Forest and surrounds. The forests around Daylesford, Porcupine Ridge, Glenlyon have tall messmates and candlebarks, silver wattles and blackwood, and birds such as White-eared Honeyeaters, Crescent Honeyeaters and Gang gang cockatoos. But as you head past Mount Franklin, and yours ears pop a little as you move onto the plains – a whole different world awaits. The flora and fauna of Shepherds Flat, Yandoit, and Clydesdale are remarkably different to the Daylesford area.
The trees are red box, grey box and yellow gum with black wattles, with river red gums along the watercourses. And the bird fauna is incredible: Fuscous Honeyeaters, White-plumed Honeyeaters, Brown Treecreepers and one of my very favourite birds – the Diamond Firetail.
A small bird of great beauty, the Diamond Firetail sports a neat black and grey suit with white spots, set off by a dashing crimson rump and a coral-coloured bill and eye ring.
Diamond Firetails feed on seeds of both grasses and native trees such as she-oak. One day at the Rise and Shine Bushland Reserve in Clydesdale, I chanced upon a lone Diamond Firetail foraging with a distinctive series of moves. He trundled along the ground, then leapt up to a grass seed head, grabbed it firmly in his bill, then stood on the grass head to eat the seeds. The process was repeated at the next grass tussock.
Living on seeds alone is thirsty work, and Diamond Firetails need a safe source of water in their bushland or woodland habitat. In dry times, one way to help firetails and other birds is through the provision of a bird bath or two. Bird baths are a wonderful way to enjoy your local birds, but do bear in mind they require daily maintenance to ensure the water is clean, and always topped up.
It is too hot and dry for breeding at the moment, but after the rains return and seeding grasses are available, nesting will occur anytime from August. To attract the female, the male Diamond Firetail selects a long piece of grass with a seed head, and holds it tightly in his bill. He then fluffs his spotted flank feathers and sings as he bobs up and down on the perch.
If the female approves, they will mate in the privacy of the nest. The nest is a domed affair, of grasses, seed heads and roots, and may be found in a mistletoe clump or a thick shrub such as Hedge Wattle. Very often, flowers are weaved into the entrance of the front of the nest. The inside of the nest is lined with very fine grasses and feathers weaved together.
A few years ago, I observed a Diamond Firetail nest built amongst the large sticks of the base of a Wedge-tailed Eagle nest! According to BirdLife Australia, this is a common practice, and the finches use many types of birds of prey nests such as such as a Whistling Kite, White-bellied Sea-Eagle, Wedge-tailed Eagle, Brown Falcon, Nankeen Kestrel and Square-tailed Kite. One nest of a Whistling Kite contained nine Diamond Firetail nests!
Diamond Firetails forage in small flocks. In a fascinating study, bird ecologists discovered that it was actually the females in a flock that determine where a flock forages, and many females forage first for the choicest seeds. This dominant position of some females over the males and other females was indicated by the size and number of white spots along her flanks. A female with many and large spots was likely to always win over a contest over choice food items. It is very unusual in the bird world to have feather patterns playing such a big role in female – male food competition.
The spots are also distinctive enough that if you have Diamond firetails visiting your bird bath or garden, and you take photos of them, you can recognise individuals by their spot patterns.
The Diamond Firetail is less common than it once was, largely due to the removal or degradation of suitable habitat. Happily small populations are still being reported in areas such as Clydesdale, Muckleford and Fryerstown. If you have Diamond Firetails visiting your garden, or you see some out in the bush, I would love to hear from you!
Crowhurst, C. J., Zanollo, V., Griggio, M., Robertson, J. and Kleindorfer, S. (2012), White Flank Spots Signal Feeding Dominance in Female Diamond Firetails, Stagonopleura guttata. Ethology, 118: 63–75. doi: 10.1111/j.1439-0310.2011.01986.x