With its remote breeding range, there is little information on the breeding population of Wandering Tattler. The species winters from British Columbia to northern South America, but is most common between southern California and southern Mexico (Gill et al. 2002). The Christmas Bird Count (CBC) provides an indication of the continental population status of the species, but misses an important portion of the population in Mexico. To complicate matters, Wandering Tattlers are rare breeders in Canada, and the wintering location and status of Canadian breeding birds is unclear. Available results from the CBC at the continental scale suggest that the Wandering Tattler has exhibited a large decrease in abundance relative to about 1970. The decline appears to have started in the early 1980s, though these results are based on a small number of CBC circles (35). Because of the aforementioned reasons, this result is considered to be of low reliability in terms of providing an index of the Canadian population's status. Regardless, the Wandering Tattler is currently below the lowest acceptable level relative to its national population goal (see graph below).
Additional information on: Christmas Bird Count (CBC)
