Clues to Identifying Common Ectoparasites in Backyard Poultry

There are a number of different ectoparasites (external parasites) which target backyard poultry. Properly identifying the pest is key to successfully eradicating them. Since most of them are quite small, some barely visible to the naked eye, it can be difficult to detect their presence, and figure out which pest it is unless you know what clues to look for.