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The objective of this project was to initiate a multi-year, collaborative shorebird monitoring program under the auspices of the Casco Bay Estuary Partnership. Project partners are provided in Appendix A. This first year of the project focused primarily on a subset of Casco Bay shorebird areas previously designated by the Maine Department of Inland Fisheries and Wildlife (MDIFW). Although some knowledge exists of shorebird habitat within the Casco Bay region, several years of uninterrupted annual monitoring by this project is anticipated to more accurately characterize shorebird use of distinct sites in this system. Depending on the length of this time series (i.e., the number of uninterrupted survey years), identification of trends in the use of given areas by individual shorebird species may also be possible. These data can inform the development of adaptive management/conservation strategies that promote resilience of intertidal communities, which are particularly vulnerable to climate change-induced environmental shifts (Galbraith et al. 2005; Durrel et al. 2006).