- Thread starter
- #6,501
That makes more sense now.My understanding is that the oil from the preen gland contains the precursors to vitamin D and those gets converted to vitamin D when exposed to the sun. The bird then ingests the vitamin D when they preen.
They can also make vitamin D in exposed skin (as we do) but there is only a little bit of that. I think unlike us their eyes can also make vitamin D.
I can probably dig up the reference to this, I came across it when researching vitamins in chickens because of Bernadette who I believe has a vitamin B2 issue.
One of the problems I had in Catalonia was much of what I got told was in a mixture of rural Catalan and Spanish. I don't speak any Spanish and rural/farming Catalan is rather different to the Catalan one learns for every day general use. It's the phrases that throw you, much like in English and many words in Catalan do not translate accurately into English. My favourite so far was trying to look for spiders when what was meant was mites.