BBC Wildlife Magazine

A real-life mini egg

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There is an abandoned blackbird nest in my garden. I was surprised to see that it contained one very undersized egg alongside the normal ones. There seemed to be a direct correlatio­n between the size and darkness of the eggs. They get darker as they get smaller, as though the brown pigment is added at the beginning of the egg production process.

Alan Dixon, via email

Charles Deeming replies:

Bird eggs normally contain yolk and albumen surrounded by a hard shell. The small egg was certainly built around a very small yolk released prematurel­y from the ovary, but it still stimulated the bird’s oviduct to deposit some albumen and shell around it. The browner colour may reflect more deposition of the protoporph­yrin IX pigment, normally spread more widely on the eggshell.

Threat to the Red Sea

I was shocked to read about FSO Safer and by the internatio­nal inertia surroundin­g this sad story (My way of thinking, April 2021). I, and no doubt many other concerned

environmen­talists, were simply unaware of this situation.

It is not that one does not care, but poor communicat­ions have not informed the wider world opinion. We have had stories like this in the past where nothing positive has developed. It shows that the UN does not have much power to intervene. Perhaps when oil lubricates Saudi Arabia’s coastline she will cease fighting a war with Yemen and clean up this mess. Norman Marshall, Llandudno Junction

 ??  ?? The abandoned nest containing the mini egg.
sustainabl­e nor ethical. Anand Chandrasek­har, Bern, Switzerlan­d
The abandoned nest containing the mini egg. sustainabl­e nor ethical. Anand Chandrasek­har, Bern, Switzerlan­d

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