A Late Summer Report from the Bower
by Jill Whiter
(Illawong Nature Reserve)
Sea-Eagles nest tree at Illawong
February hadn't advanced far and we were still within the first half when I took a quiet and somewhat damp stroll along the Illawong Track. The woodland birds were fairly quiet, resting now at the end of a demanding breeding season, though there were a lot of Eurasian Coot calls from the swamp. There must be more open water between the reedbeds than can be seen from the waterside. I hear there are fairly large flocks of Coots around the Shire, perhaps here to take advantage of food stirred up by a few heavy downpours. A good rain sets the streams and rivers running, churning up the bottom mud and throwing out numbers of invertebrates and all the shrimp-like wetland dwellers. And rain is frog heaven, they revel in it and immediately set to breeding again, and again, and for as long as the rain falls and the warmth continues. Frogs constitute a large part of most waterbirds' diet. Suffice to say, the Coots wouldn't be at Illawong Swamp if there wasn't a flush of food.
An interesting sighting was a young White-bellied Sea-Eagle at the nest tree. A female from the size (raptor females are larger than males) and, I think, in third-year plumage or assuming fourth-year. That means she is three to four years old, still very brown, but with vague outlines of adult markings beginning to emerge as buff or fawn patches here and there and an almost-white tail. I'm guessing a bit about her age and erring on the side of caution because it is difficult to tell if one is looking at a third, fourth or even fifth year bird; the stages of plumage differ from bird to bird and she could be moulting into, or out of, a certain stage. If you are studying the same young bird day after day, it's much easier to judge the age by the changes you are taking note of so regularly. But it was my first sight of this young female.
It is difficult to find information on the age at which females are ready to breed, it's generally accepted that males don't breed till about six years old but there is little written about the female cycle. It would be logical to assume that the female would begin breeding earlier than the male, if only because her fertile years are more arduous and she is likely to raise more young, successfully, in the early years of her breeding than when she is older and her strength is waning. We will keep a close watch over the coming months when established pairs renew bonds and the 'singles' choose new partners.
This article was written by Jill Whiter, author of the Eurobodalla Naturalists Diary, a compilation of newspaper articles that chronicled Jill's observations of the local native wildlife in the region on a monthly basis. The diary is a fascinating collection of observations in the Eurobodalla (or mid South Coast) region made by local octagenarian, Jill Whiter, who's been a keen observer and naturalist for most of her many years. Click here for more details and to order a copy. We welcome contributions from our visitors to this page. Please upload any pics of South Coast wildlife with a few details of where they were sighted using the link at the bottom of this page.
There were still good numbers of butterflies around, though I saw only Common Brown females, the males have probably died off by now. Lots of little Brown Ringlets showing their orange 'eyes' as they rose from the grassy path and an occasional Meadow Argus. Along the fence line separating open country from the woodland, there were a couple of Swordgrass Browns (just the right place for them, close by the water meadows) and maybe half-a-dozen Black Jezebels.
Up on the slope, a couple of Jacky Lizards dashed for cover, miniature dragons with heads and tails held high. They will have already laid their eggs, safely stowed in the soft earth against a fallen log or a conveniently placed stone. There were Dark-flecked Garden Sunskinks, Lampropholis delicata, skittering off in all directions, easily a hundred in less than an hour's walk. These are about the most common of the several skink species identified in the Shire. I never tire of watching them and find their gentle and trusting behaviour an absolute delight. Did you know that a colony of skinks in your garden will help to control the insect population? They eat an awful lot in a day! So be kind to them, give them a little pond and a few rocks and ground cover plants to shelter under in the winter. They will repay your thoughtfulness by reducing some of the pests that annoy you.