Average (± SD) percentage of the long axis of the feather rachis with <i>Proctophyllodes huitzilopochtlii</i> present for each tail feather (rectrices 1–5, right and left sides.

Results are reported for sex of Anna’s Hummingbirds (n = 98 males and 65 females) that had mites present on any rectrix. The percentage scale ranged from 0–100% in 10% increments unless 5 or fewer mites were present (reported as 5%) or a single mite was present (reported as 1%). Not all rectrices had mites present. “LR” denotes “left rectrix” and “RR” denotes “right rectrix.” All mites were observed on the ventral aspect of the feathers.