Oystercatchers by Bethany Smith | Apr 27, 2022 | Map Hybrid oystercatcher First sighting of a new hybrid oystercatcher in San Julian, Argentina Publication: Jehl,J.R. Jr. A New Hybrid Oystercatcher from South America, Haematopus Leucopodus X.H. Ater. Condor. 80:344-346. 1978.