Population status

Lesser Yellowlegs
(Tringa flavipes)

The Lesser Yellowlegs breeds primarily in inaccessible boreal habitats and winters primarily in northern South America (Tibbitts and Moskoff 1999). Thus it is best surveyed during migration, although the limited results available from the Breeding Bird Survey (BBS) offer additional insight into its population status. Results from migration monitoring surveys suggest a large decrease in abundance relative to about 1970, but the trend estimate has poor precision. Results from the BBS also suggest large decreases in abundance, but offer incomplete coverage of the breeding population. Together, however, these results suggest a large decrease in abundance relative to about 1970, with medium reliability.

 

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 Data1974-2013-3.49-7-0.12
 

Breeding Bird Survey (BBS) - Canadian analysis

Additional information on: Breeding Bird Survey (BBS) - Canadian analysis

Table 2: Population trends by geographic area
Geographic areaTime Period Table 2 - footnote 1 Annual trend Table 2 - footnote 2 Intervals Table 2 - footnote3
LowerUpper
Canada Select to view graph of the geographic area: Canada 1973-2012; Breeding Bird Survey (BBS) - Canadian analysis1973-2012-3.9-5.9-1.8
 

References