Population status

Long-billed Dowitcher
(Limnodromus scolopaceus)

Long-billed Dowitchers winter throughout the United States and Mexico, and migrate south primarily along the west coast and through interior North America (although a smaller number do appear along the Atlantic coast in fall; Takekawa and Warnock 2000). Migration monitoring surveys have recorded a large number of Long-billed Dowitchers, yet counts are highly variable among years. Observers at some locations do not consistently distinguish between Short-billed and Long-billed Dowitchers, adding additional uncertainty to the assessment of status. Although the trend estimate would suggest a large decrease, it has poor precision and is considered to be unreliable. A moderate decrease in the abundance of Long-billed Dowitchers in Canada since about 1970 is likely, but additional information is needed to determine the precise magnitude of the decrease.

 

Analyses of Shorebird Migration Monitoring Data

Additional information on: Analyses of Shorebird Migration Monitoring Data

Table 1: Population trends by geographic area
Geographic areaTime PeriodAnnual trend Table 1 - footnote 1 Limits
LowerUpper
Continental Select to view graph of the geographic area: Continental 1974-2013; Analyses of Shorebird Migration Monitoring Data1974-2013-2-9.125.7
 

References