"'Mike'" wrote in message
...
snip
I think you'll find that Blue Tits are single brooded being heavily
reliant on particular species of caterpillars with a limited period of
emergence for rearing the young before fledging. Great Tits can raise
two broods however.

Alf King

Thank you Dave and Alf

We like the bit about their diet being caterpillars ;-)))

Will keep you all informed as to what happens next.

Mike

It's those little green caterpillars that give the chicks their
yellowy-green colour. There was a guy who hand-reared some BT chicks on
mealworms and they didn't look green! I read that they live on oak trees
and as the leaves get older and darker, the caterpillars consume more
chemicals, tannins I expect, and become too toxic. Hence the one brood.

Dave

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Dave & Viv are living happily ever after in Pembrokeshire.
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