birding-aus

gibberbird eggs

To: Michael Todd <>
Subject: gibberbird eggs
From: Penny Drake-Brockman <>
Date: Sun, 12 Dec 2004 19:06:21 +1100
Hi Mick and all

In Gordon Beruldsen's new book, eggs are described as faint pinkish-white to pale pink or pale buffy-pink, slightly lustrous and sparingly spotted or blotched with reddish-brown. mostly towards and over the larger end. Size approx 20mm x 15mm, 2 or 3, occasionally 4. Usual shape tapered oval. The photograph of a nest shows 2 whitish eggs, one wioth bright reddish spots circling the larger end, the other with faint reddish spots.

Michael Todd wrote:

Hello all,

I'm sorting through my photographs from the last 12 months and have been baffled by some photos that I took of a gibberbird nest that had 2 eggs back on the 5th August at Davenport Downs in south-west Qld.

The strange thing is that the 2 eggs in the nest were quite different in colour and pattern to such an extent that I at first assumed that there was a cuckoo egg in the nest. After closer re-evaluation I now think that there wasn't a cuckoo egg in the nest. One egg was noticeably pinker in colour, with denser markings than the other.

Normally I'd look up venerated egg references like North or Campbell with a problem like this but the Gibberbird wasn't described until AFTER these volumes were published (early 1900's).

Now, this egg variation within a clutch may be normal for Gibberbirds, I'm no expert on them. I'd love to hear from anyone who knows about Gibberbird eggs or for that matter whether it is normal to have a lot of variation within a clutch of eggs.

Cheers

Mick



Mick Todd
Toronto, NSW, Australia


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