Originally Posted by SteveCooke
Thanks for your input! She makes the point though, that the zoo who did the study responsible for the iron scare was successful in caring for birds for a number of decades with a food that contained 40mg/1kg of iron. It was a change of the recipe that resulted in 800mg/1kg
of iron that led to the poisoning.
She says the iron content of raw sugar is in fact very low and very safe (containing 3.7mg/1kg of iron, just 10% of the zoo's successful supplement). It seems to me organic raw sugar would be better for the birds and the environment.
Am I wrong here? Thanks
Sorry for interrupting as it's not an actual proof, still:
Unrefined sugar from sugar cane has iron, mineral salts and other minerals that are not present in white granulated sugar (only sucrose) nor in natural flower nectar.
While a better choice for humans, the added minerals in unrefined sugar may have an adverse affect on hummingbirds.
Brown sugar has molasses added to it which also contains iron and other minerals. Plain, white granulated sugar is best for making your hummingbird solution.
So it's not only iron that could do the harm.
you can read some arguments from Lanny Chambers, who is hummingbird expert.
Hope this helps.