East with the Night: Longitudinal Migration of the Orinoco Goose (Neochen jubata) between Manú National Park, Peru and the Llanos de Moxos, Bolivia

A pair of Orinoco Geese (Neochen jubata), a Critically Endangered species in Peru, was tracked migrating approximately 655 kilometers from Manú National Park to the Llanos de Moxos in Bolivia. This longitudinal migration, primarily occurring at night with or without moonlight, sheds light on the wet season location of Peru's last known breeding population, aiding conservation efforts. The study suggests that Orinoco Geese in the Llanos de Moxos are year-round residents, indicating a partial migration from the Bení region, possibly due to cavity nest limitations. Researchers used GPS/Argos satellite PTTs to monitor the geese's movements and foraging areas, highlighting the importance of grazing lawns maintained by herbivores, including cattle.

Davenport, L. C., Nole Bazán, I., & Carlos Erazo, N. (2012). East with the Night: Longitudinal Migration of the Orinoco Goose (Neochen jubata) between Manú National Park, Peru and the Llanos de Moxos, Bolivia. PLoS ONE, 7(10), e46886. https://doi.org/10.1371/journal.pone.0046886