: Irritation from the lice crawling and chewing can lead to skin damage.

: To avoid being picked off during a bird’s preening (grooming), many lice have evolved colors that perfectly match their host’s feathers.

: Excessive feeding can leave feathers looking tattered or "moth-eaten".

The Tiny World of Bird Lice: What You Need to Know Bird lice (suborders Amblycera and Ischnocera ) are highly specialized, wingless insects that spend their entire lives living on birds. Unlike the "true lice" that bother humans, bird lice are primarily . Instead of sucking blood, they mostly graze on skin flakes and feather fragments, though some species have evolved to feed on blood occasionally. Why They Are Unique

While a few lice are normal for most wild birds, heavy infestations can cause significant distress: