Use of Peninsula Valdes (Patagonia Argentina) by migrating Red Knots (Calidris canutus rufa)

Península Valdés, a UNESCO World Heritage Site in Patagonia, Argentina, is identified as a critical stopover for migrating Red Knots (Calidris canutus rufa). The study reveals that these shorebirds strategically utilize multiple beaches across two gulfs with contrasting tides to maximize foraging efficiency. Weekly censuses and aerial surveys conducted between 2006 and 2007 showed significant variation in beach usage, with peak numbers recorded in April. Marked individuals were observed using both gulfs on the same day, demonstrating their ability to exploit tidal patterns for optimal feeding. This behavior underscores Península Valdés' importance as a vital refueling site along the Red Knot's northern migration route.

Musmeci, L. R., Hernández, M. d. l. Á., Bala, L. O., & Scolaro, J. A. (2012). Use of Peninsula Valdes (Patagonia Argentina) by migrating Red Knots (Calidris canutus rufa). Emu - Austral Ornithology, 112(4), 357–362. https://doi.org/10.1071/mu10079