Borrelia anserina
Phylum Spirochaetes
Class Spirochaetes
Order Spirochaetales
Family Spirochaetaceae
Genus Borrelia
Species anserina
Borrelia drawing. (Lamiot 2009, Wikimedia commons)

Borrelia anserina is a species of Borrelia bacteria.

Borrelia anserina causes Avian spirochaetosis, an acute, endemic disease of birds in tropical and subtropical regions.