Grade A â Eggs appear to be the same as Grade AA, but the difference is a slightly lower interior quality. These type of eggs are commonly sold in local supermarkets. Grade B â Eggs are noticeably different.
Rodenticides, colloquially rat poison, are typically non-specific pest control chemicals made and sold for the purpose of killing rodents. Some rodenticides are lethal after one exposure while others require more than one.
To get a better idea of how toxic rat poisons are for different birds of prey, a team of scientists led by Philippe Thomas from Environment Canada decided to analyze published data on rat poisoning in birds. They also analyzed 196 livers from great horned owls and red-tailed hawks found dead throughout Canada.