- Vireo vicinior
Their preferred breeding area is arid scrub.
Their main diet during the breeding season is insects.
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2013. The eBird/Clements checklist of birds of the world: Version 6.8., with updates to August 2013. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Handbook of the Birds of the World Alive (retrieved May 2014)
- BirdForum Opus contributors. (2023) Gray Vireo. In: BirdForum, the forum for wild birds and birding. Retrieved 6 December 2023 from https://www.birdforum.net/opus/Gray_Vireo