Fauna
Insect

Western Chicken Flea

Ceratophyllus niger

Also known as Black Hen Flea

Western chicken fleas are tiny, wingless, laterally flattened parasites that feed on the blood of domestic poultry and wild birds across western North America. Unlike fleas that remain permanently on a host, adults spend much of their time in nest litter and coop crevices, hopping onto birds primarily to feed. Heavy infestations in backyard coops irritate roosting flocks and can occasionally result in itchy bites on people tending the birds.

ParasiticWinglessPoultry Pest
—observations
—countries
—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyDomestic chickens, Wild songbirds, Organic nest debris
Predators
  • Predatory mites
  • Spiders
  • Ants
ThreatsCoop sanitation, insecticides, and dry conditions
HabitatsBird nests, poultry coops, and roosting crevices in western North America
Life span2–6 months as an adult
Classification
  1. FamilyCeratophyllidae
  2. SpeciesCeratophyllus niger
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance; wear gloves when cleaning infested coops to avoid itchy bites.
Responsible observation
  • Inspecting Coops: Check cracks, roosts, and nesting box litter where adults hide between feedings.
  • Preventing Infestations: Replace soiled bedding regularly and seal gaps that let wild birds roost inside.
  • Handling Birds: Wear long sleeves and gloves when tending infested flocks to avoid stray bites.
Related species
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