''Ceratophyllus borealis '', also known as the boreal flea, is an

ectoparasite Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has ...

of birds. It is a black species found on ground-nesting birds such as

pipit The pipits are a Cosmopolitan distribution, cosmopolitan genus, ''Anthus'', of small passerine birds with medium to long tails. Along with the wagtails and longclaws, the pipits make up the family (biology), family Motacillidae. The genus is wide ...

wheatear The wheatears are passerine birds of the genus ''Oenanthe''. They were formerly considered to be members of the thrush family, Turdidae, but are now more commonly placed in the flycatcher family, Muscicapidae. This is an Old World group, bu ...

s and

wagtail Wagtails are a group of passerine birds that form the genus ''Motacilla'' in the family Motacillidae. The forest wagtail belongs to the monotypic genus ''Dendronanthus'' which is closely related to ''Motacilla'' and sometimes included therein. T ...

References

Insects described in 1907 Ectoparasites Parasites of birds Ceratophyllidae {{Flea-stub