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Species at risk (SAR) criteria (diversity, SAR richness, irreplaceability, global rarity, candidate SAR and probability of critical habitat) were assessed and scored, and the top 25% of these scores within each habitat type were categorized as having PHCV. Migratory bird criteria related to each habitat (landbird stopover, waterfowl stopover, grassland/forest density and waterfowl density) were added together and the top 25% of these scores were categorized as having PHCV.Study units (2 ha hexagon) containing at least 2 of these PHCVs were aggregated together at 750 m to derive High Value Biodiversity Areas.Areas greater than 20 ha are classified as 'Biodiversity Sites' and those areas less than 20 ha are 'Secondary Sites.' 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