Oleander Toxicity Overview
Oleander (Nerium oleander)
is an attractive, hardy, ornamental, evergreen shrub that is a major cause of animal poisonings worldwide. N. oleander
is found in tropical and subtropical regions. It has dark gray-green, leathery leaves. It's showy clusters of flowers bloom from early summer until mid-autumn.
is a highly toxic plant. It contains several cardiac glycosides--the most toxic chemicals being oleandrin and neriine. Cardiac glycosides cause poisoning by inhibiting Na+/K+ ATPase. Bird's don't need to ingest very much to have fatal consequences. The most frequent source for oleander exposure in birds is yard/garden clippings.