1. International Union for the Conservation of Nature Species Survival Commission Stork, Ibis Spoonbill Specialist Group, Rue Mauverney 28, Gland 1196, Switzerland
2. Addis Ababa University, College of Natural and Computational Sciences, PO Box 1176, Addis Ababa, Ethiopia
3. BeWild, Rua Professor Mark Athias, n. 15 8A, 1600-646 Lisbon, Portugal
4. Department of Evolutionary Ecology, Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, c/José Gutiérrez Abascal 2, 28006 Madrid, Spain