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A Review of Migratory Bird Flyways and Priorities for Management - TS No. 27
… for the largest birds owing to the rela- tively bulky and heavy tags used, progressive miniaturization means that … Added to this is mortality from chemical residues and heavy metals, and the accidental consumption of plastic and … and bycatch. Pollution Oil, chemical residues (PCBs), heavy metals and marine debris are the major pollutants that …