Below is an article from a former MARS student who is now a rehabilitator in Florida.
This Great Blue Heron was admitted this evening after friends at Owl’s Nest Sanctuary for Wildlife rescued it when they received a call from a concerned finder. The heron was on their dock for an entire day & had not moved. Upon arrival at Seaside Seabird Sanctuary in Florida, our rehabilitator Melissa Dollard found that the heron was showing signs of possible heavy metal poisoning & began treatment immediately (pictured is Melissa giving the heron subcutaneous fluids). As of now the heron is in critical condition & will be receiving intensive care. Positive thoughts for this beauty!