Band-tailed Pigeons

February 10, 2022

Question: What can the public do to help reduce the spread of avian trichomonosis in band-tailed pigeons?

Answer: Population numbers for band-tailed pigeons in California are relatively stable. However, we remain active in our conservation efforts—especially considering a novel form of avian trichomonosis that was discovered in 2013. The disease, caused by a flagellated protozoan (e.g. a microbe with a tail), causes abnormal growth in pigeons’ throats which can prevent them from eating and breathing. Avian trichomonosis can be passed from parents to their young during feeding and at water or mineral sites where pigeons congregate. Band-tailed pigeons are especially vulnerable during winter when they congregate at feeders in large flocks.

Residents can help by planting native plant species like coffeeberry, Christmasberry and madrone on their properties. Oak trees are also a good landscape choice because band-tailed pigeons consume a lot of acorns. By planting native species, residents can attract birds and allow for natural foraging with a lower probability of infection. If residents install bird feeders, baths or fountains they should be sanitized often or contain a filtering mechanism.

Read more about band-tailed pigeon conservation efforts on CDFW’s website.