[fugl]

Originally Posted by humminbird

Lead is more a matter of cumulative effect than concentration if I am not mistaken. So, while they would have to drink less to accumulate an LD I do not think it would be any "more lethal" than at a lower concentration.

Yes, but surely the higher the concentration the sooner a lethal dose is accumulated. But a purely academic question, I think. Or is there evidence that lead in the water used to mix artificial nectar poses a real-world health hazard for hummers?