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Conserving nature through science and outreach

Winter Songbird Monitoring

IIBO has shifted focus and funding towards Migration Monitoring efforts. As such, The Winter Songbird Monitoring Program is no longer in operation.

The mild winter climate of southwestern British Columbia provides ideal wintering conditions for many species of migratory birds. Several of these species are either declining or are poorly monitored, including ‘Sooty’ Fox Sparrow, Golden-crowned Sparrow and Pacific Wren are unique to BC.


Programs using passive mist-netting are frequently used to monitoring the diversity, abundance, survival, and body condition of migratory songbirds, as well as the quality of the habitat they are using. The use of passive mist-netting monitoring also require mild temperatures to ensure the health and well-being of birds. The mild climate of southwestern BC provides an opportunity to conduct a winter monitoring program, using passive mist-netting, due to the mild temperatures and abundance of wintering songbirds.

In 2010, IIBO initiated a pilot Winter Songbird Monitoring program examining the songbirds wintering on Iona Island. This was the first program of its kind in Canada to monitor the survival of these birds passively, where the use of bird feeders do not bias survival rates.