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A Review of Migratory Bird Flyways and Priorities for Management - TS No. 27
… system modific ations (owing to, e.g., dams, wetland drainage, modi- fication of tidal regimes); infrastructure … system modifications (owing to, e.g., dams, wetland drainage, modification of tidal regimes), residential and … of factors such as overgrazing, burning, woodcutting, drainage of wetlands and pesticide use which reduce the …