Slender pigeon louse

Columbicola columbae · Order: Psocodea · Family: Philopteridae

Also called: Louse, Pigeon louse

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Slender pigeon louse
Photo: Doc. RNDr. Josef Reischig, CSc., CC BY-SA

The slender pigeon louse, scientific name Columbicola columbae, belongs to the genus Columbicola. It lives as an ectoparasite on birds, feeding only on the outer layer of their skin. Its diet is highly specific, limited to four different bird species.

Source: Wikipedia

How to recognize it

Columbicola columbae is a species of louse known as the slender pigeon louse.

Source: Wikipedia

Where it lives

This louse lives on the surface of bird skin as an ectoparasite.

Source: Wikipedia

What it eats

It feeds almost exclusively on four bird species.

Source: Wikipedia

Where it is found in the US

Recorded in 15 of 51 states and DC. Most records: Missouri, Massachusetts, Iowa, New Hampshire, Maine, Pennsylvania, New York, California.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in Canada. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Columbicola_columbae

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-29 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-29.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.