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Bbs routes - PowerPoint PPT Presentation

Introduction

Breeding Bird Survey (BBS) Provides index of breeding bird population trends in the U.S. Annual survey initiated in 1966 Survey routes are 39.4 km (24.5 miles) located on secondary roads 50 stops at 800 m (0.5 mile) intervals Surveyed late May, early June Data available online

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Bbs routes - PowerPoint PPT Presentation

Introduction