Laterallus jamaicensis jamaicensis

This subspecies has undergone a catastrophic historical decline and is currently absent or extremely rare at most former breeding localities. It is highly vulnerable to extinction as widespread loss of its wetland habitat, sea level rise, and incompatible land management techniques continue to contract the range throughout the eastern United States. Modeling by the U.S. Fish and Wildlife Service predicts a high probability of complete extinction by 2068.

Historically, this subspecies ranged across the eastern, central, and southern United States with additional records from the Caribbean, Central America, Brazil, and Ontario, Canada. It currently breeds in eastern North America from New York to Florida along the Atlantic Coast, and along the Gulf Coast to Texas. The winter range is poorly known but is generally in the southern portion of the breeding range (Eddleman et al. 2020). It has been reported to occur throughout the Caribbean and Central America, however, its distribution in these regions is poorly understood and these records may be considered vagrants (USFWS 2020). It is possibly breeding in Guatemala (Eisermann and Avendano 2018).

Using data provided by NatureServe Network Programs with a separation distance of 5 km, there are likely no more than 80 element occurrence records in the breeding range.

Eastern black rails historically suffered from the widespread conversion and alteration of wetland habitat, however scientists believe that recent precipitous declines are being driven by sea-level rise and nest inundation from higher tidal flooding (ACJV 2020). They are highly susceptible to sea-level rise fluctuations and are vulnerable to predators when flooded out of high marsh breeding habitat. By 2100, coastal salt marsh habitat losses are projected to range from 56% to 63% for marsh nesting birds (Krebs et al. 2023).

The 2020 Black Rail Conservation Plan (ACJV 2020) scored the threats as follows. Very High: Loss of habitat and potential nest flooding due to sea level rise, and loss of habitat due to new residential development. High: Loss of habitat quality due to increased temperature and drought, direct mortality, and nest loss due to storms and flooding, agricultural practices incompatible with Black Rail habitat, marsh burning inconsistent with species needs, and land use incompatible with marsh migration.

Additional lower-level threats listed by ACJV (2020) and USFWS (2019, 2020) include incompatible management of impoundments, existing development impacting Black Rail habitat, degradation of habitat due to open marsh water management, disease (e.g., West Nile), problematic native species, transportation infrastructure that restricts tidal flow, invasive non-native species, shoreline hardening, disruptive birding, recreation, and research, and oil spills. In Louisiana, there is the possibility of collisions with structures (although data are lacking). Also, facilities such as Liquefied Natural Gas (LNG) are being built in suitable black rail habitat (M. Seymour, pers. comm. 2024).