Distinguishing features for flickers are the black bib they wear and their mustaches. The red-shafted male has red mustaches. The yellow-shafted has black mustaches and a red nape. Hybrids of the ...

Some makers reportedly use a hybrid configuration in which the panel has a low flicker rate at high brightness and vice-versa. In Sutrich's case, he went as far as digging up what system ...