Clements, J. F., P. C. Rasmussen, T. S. Schulenberg, M. J. Iliff, T. A. Fredericks, J. A. Gerbracht, D. Lepage, A. Spencer, S. M. Billerman, B. L. Sullivan, and C. L. Wood. 2023. The eBird/Clements checklist of birds of the world: v2023 http://www.birds.cornell.edu/clementschecklist/download, läst 2022-10-26
doi.org
dx.doi.org
e.g. of Trophis racemosa (Moraceae): Foster, Mercedes S. (2007). ”The potential of fruit trees to enhance converted habitats for migrating birds in southern Mexico”. Bird Conservation International 17: sid. 45–61. doi:10.1017/S0959270906000554.