You can use it for research or reference. To access the current site visit current site.
The Semipalmated Sandpiper breeds in arctic and subarctic Canada and winters along the northern and central coasts of South America; it is best surveyed during migration when birds congregate at interior wetlands and beaches of the Atlantic coast. Migration monitoring surveys suggest that Semipalmated Sandpipers have exhibited large decreases in abundance relative to about 1970, primarily prior to 1990. Morphometric data from the Bay of Fundy suggest that the eastern breeding segment of the population (those with the longest bills) may be declining to a greater extent than central breeders (Hicklin and Gratto-Trevor 2010). Because migration monitoring surveys are biased towards sites on the Atlantic coast (at the expense of interior sites), the rate of decline suggested by migration monitoring results may be larger than the actual range-wide decline. Still, a decrease in the abundance of Semipalmated Sandpipers is likely and is consistent with information from the breeding and wintering grounds (e.g., Jehl 2007, R.I.G. Morrison, Environment Canada, pers. comm.).
Additional information on: Analyses of Shorebird Migration Monitoring Data
