Zigzag Heron Zebrilus undulatus


Bird, J.P., Buchanan, J.M., Lees, A.C., Clay, R.P., Develey, P.F., Yépez, I. and Butchart, S.H.M. 2011. Integrating spatially explicit habitat projections into extinction risk assessments: a reassessment of Amazonian avifauna incorporating projected deforestation. Diversity and Distributions: doi: 10.1111/j.1472-4642.2011.00843.x.

Bird, J.P., Martin, R., Akçakaya, H.R., Gilroy, J., Burfield, I.J., Garnett, S.G., Symes, A., Taylor, J., ?ekercio?lu, Ç.H. and Butchart, S.H.M. 2020. Generation lengths of the world’s birds and their implications for extinction risk. Conservation Biology 34(5): 1252-1261. DOI: 10.1111/cobi.13486.

del Hoyo, J., Elliot, A. and Sargatal, J. (eds). 1992. Handbook of the Birds of the World, Vol. 1: Ostrich to Ducks. Lynx Edicions, Barcelona, Spain.

Freile, J.F., Santander G.T., Jiménez-Uzcátegui, G., Carrasco, L., Cisneros-Heredia, D.F., Guevara, E.A., Sánchez-Nivicela, M. and Tinoco, B.A. 2019. Lista roja de las aves del Ecuador. Ministerio del Ambiente, Aves y Conservación, Comité Ecuatoriano de Registros Ornitológicos, Fundación Charles Darwin, Universidad del Azuay, Red Aves Ecuador, Universidad San Francisco de Quito, Quito, Ecuador. 2021. GBIF Occurrence Download (22 November 2021): Zebrilus undulatus. Available at:

Global Forest Watch. 2021. Interactive Forest Change Mapping Tool. Global Forest Watch. Available at:

Hafner, H.; Kushlan, J. A. 2002. Action plan for conservation of the Herons of the world. Heron Specialist Group, Gland, Cambridge and Arles.

Hansen, M.C., Potapov, P.V., Moore, R., Hancher, M., Turubanova, S.A., Tyukavina, A., Thau, D., Stehman, S.V., Goetz, S.J., Loveland, T.R., Kommareddy, A. Egorov, A., Chini, L., Justice, C.O. and Townshend, J.R.G. 2013. High-resolution global maps of 21st-century forest cover change. Science 342(6160): 850-853.

Hilty, S. L. 2003. Birds of Venezuela. A&C Black, London.

IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. Available at: (Accessed: 21 July 2022).

Martínez-Vilalta, A.; Motis, A.; Kirwan, G. M. 2020. Zigzag Heron (Zebrilus undulatus), version 1.0. Ithaca, NY, USA. Cornell Lab of Ornithology. Available at:

Restall, R.; Rodner, C.; Lentino, M. 2006. Birds of northern South America: an identification guide. Volume 1: species accounts. Christopher Helm, London.

Ridgely, R. S. 2002. Unpublished data.

Soares-Filho, B.S., Nepstad, D.C., Curran, L.M., Cerqueira, G.C., Garcia, R.A., Ramos, C.A., Voll, E., McDonald, A., Lefebvre, P. and Schlesinger, P. 2006. Modelling conservation in the Amazon basin. Nature 440(7083): 520-523.

Further resources

IUCN SSC Heron Specialist Group

Search for photos and videos, and hear sounds of this species from the Macaulay Library

Species factsheet from HeronConservation - The IUCN-SSC Heron Specialist Group

Media resources

Recommended citation
BirdLife International (2022) Species factsheet: Zebrilus undulatus. Downloaded from on 29/11/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 29/11/2022.