Indicator guilds representing forest composition and configuration in the Great Lakes - St. Lawrence forest region - A nationally replicable selection methodology

► We identify avian indicators guilds of regional forest composition and configuration. ► We estimate guild abundance trends and trend reliability to track forest change. ► The wetland guild has moderately declined in the region since 1967. ► The deciduous guild moderately increased in the region since 1990. ► Our methods are replicable with freely available data within North America.