Parrots Threatened by Widespread Lead Poison

[Still Waters]

New Zealand’s kea* are among the most devastatingly intelligent birds on the planet. For instance, animal cognition researchers say kea are as smart as crows at solving mechanical puzzles. So it comes as a shock to learn that much of what we know about the kea’s unusual behavior in the wild comes from studies of birds stultified by lead poisoning.

http://blogs.scienti...lead-poisoning/