Britto, V. O., et al. “Foraging Habitat Selection by gull–billed Tern (Gelochelidon Nilotica) in Central Spain (Castilla–La Mancha)”. Animal Biodiversity and Conservation, vol. 41, no. 2, Aug. 2018, pp. 301-10, doi:10.32800/abc.2018.41.0301.