|Don's Home Science Biology Poultry Grit and Gizzards|
I mentioned that you could use poultry grit in my page about traction on ice. Several people asked what it is.
The gizzard is an organ found in the digestive tract of some animals, including archosaurs (dinosaurs, birds, pterosaurs, crocodiles and alligators), earthworms, some gastropods, some fish and some crustaceans. This specialized stomach constructed of thick, muscular walls is used for grinding up food, often aided by particles of stone or grit. Some animals that lack teeth swallow the stones or grit for this purpose. The small bits of gravel that act as 'teeth' in the gizzard, break down hard food such as seeds and thus help digestion. All birds have gizzards, but not all swallow stones or grit.
There are two kinds of poultry grit.
Both can be sprinkled on ice to increase traction.