We report the first description of the nest, eggs, and nesting phenology of the Cozumel Vireo (Vireo bairdi), a passerine species endemic to Isla Cozumel, México. We discovered three nests of this species in 2009. These open-cup nests were woven onto branches and hung beneath forks. Clutch size was 2–3 eggs, and eggs were ovate and had a white ground color with reddish-brown flecks. These characteristics of nests and eggs are similar to those of most other Vireo spp., including other West Indian members of the Vireo subgenus. Breeding activities, including egg-laying, incubation, and nestling and post-fledging provisioning occurred from May to July 2009. We estimated the length of incubation to be ∼14 days and length of the nestling stage to be 11–12 days. Much of the Cozumel Vireo's breeding biology remains unknown and further study of this single-island endemic is needed.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.