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Secretive Marshbird Trends Across the Deltaic Plain of Louisiana

PRESENTER: Leah Moran, PhD candidate, School of Renewable Natural Resource, Louisiana State University PROGRAM DESCRIPTION: Secretive marshbirds (SMB) are an enigmatic group of waterbirds found within fresh to saline marshes of Louisiana and are affected by both natural and anthropogenic changes within their environment. The lack of information regarding SMB distributions complicates planning, management, and restoration of SMBs in coastal Louisiana, highlighted during the aftermath of the Deepwater Horizon Oil spill in 2010. To address this information gap, we conducted three years of callback survey within five basins around Coastal Reference Monitoring Stations (CRMS) scattered across Louisiana wetlands of five key breeding SMBs across various coastal marsh types within the deltaic plain of Louisiana. Ecological variables such as water levels, vegetation community types and remote sensing results were then used to quantify ecological trends and estimate the abundance of SMBs. Additionally, deployment of GPS tags on rails and gallinules will help better identify what factors may affect home range size and movements across seasons. The development of species distribution models from abundance across southeastern Louisiana will help biologists better identify key restoration features for marshbird management and conservation.