California Condor. Eben McMillan 10 February 1964 grain that had been treated with Thallium Poison, NO dead squirrels were found on the surface of the ground, Ben Easley thinks compound 1080 commenced being used as a mixture to poison squirrels in 1946. Mr. Easley again stated that his thinking regarding the death of the Margaret Brown Condor was that this bird had fed on young squirrels that had filled their pouches with this compound 1080 Poisoned grain before dying. They being quite small the Condor swallowed them whole. Mr. Easley thought the pouches of three of four young squirrels would hold enough poisoned grain to kill anything. 1080 poison that is. Easley thinks five grains of 1080 treated grain will kill a ground squirrel. He thinks 100 grains of 1080 treated grain would kill any warm blooded animal. In referring to squirrels, Dr. Ground squirrels, in the past, the species in mind has been (Citellus Beachyji) - California Ground squirrel. Ben Easley told me of seeing Twenty-Two Turkey Buzzards coming from Cottonwood trees near Old River, about 8 miles south of Bakersfield Yesterday morning.