Justification of Red List Category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
This species has undergone a large and statistically significant decrease over the last 40 years in North America (-64.8% decline over 40 years, equating to a -23% decline per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and.
Ammodramus savannarum is a mainly Neotropical species occurring in Canada, U.S.A., Mexico, Guatemala, El Salvador, Bahamas, Cuba, Belize, Nicaragua, Costa Rica, Honduras, Jamaica, the Dominican Republic, Haiti, Puerto Rico (to U.S.A.), the Netherlands Antilles, Colombia and Ecuador (del Hoyo et al. 2011). The subspecies beatriceae, of central Panama, has not been recorded since 1962 despite searches in the late 1990s, and is likely to be extinct (G. Angehr in litt. 2011).
Text account compilers
Khwaja, N., Butchart, S., Ekstrom, J.
BirdLife International (2019) Species factsheet: Ammodramus savannarum. Downloaded from http://www.birdlife.org on 19/09/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/09/2019.