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Table of Contents <br />BACKGROUND................................................................................................................... ............................... 4 <br />ARANSAS -WOOD BUFFALO WHOOPING CRANE POPULATION ESTIMATES .......................... ............................... <br />4 <br />ARANSAS -WOOD BUFFALO WHOOPING CRANE MIGRATION .............................................. ............................... <br />4 <br />PLATTE RIVER RECOVERY IMPLEMENTATION PROGRAM HABITAT AREA ........................... ............................... <br />5 <br />PLATTERIVER VALLEY USE ........................................................................................ ............................... 5 <br />WHOOPINGCRANE SIGHTINGS ............................................................................................ ............................... <br />5 <br />AerialSurveys ................................................................................................................. ............................... <br />7 <br />Whooping Crane Detection Trials .................................................................................. ............................... <br />8 <br />MIGRATION STOPOVER HABITAT .............................................................................. ............................... 8 <br />Habitat types Used / Vegetative Cover ........................................................................... ............................... <br />8 <br />WHOOPING CRANE USE SITE DATA .................................................................................. ............................... <br />8 <br />ChannelWidth ................................................................................................................ ............................... <br />9 <br />WaterWidth .................................................................................................................... ............................... <br />9 <br />WaterDepth .................................................................................................................... ............................... <br />9 <br />Bed /Sandbar Elevation ................................................................................................. ............................... <br />10 <br />Sediment Grain Size / Distribution ................................................................................. ............................... <br />10 <br />Distance to Visual Obstructions ................................................................................... ............................... <br />10 <br />Proximityto Disturbance .............................................................................................. ............................... <br />10 <br />Discharge..................................................................................................................... ............................... <br />11 <br />Land Cover Class (Vegetation) and Proximity to Other Habitats ................................ ............................... <br />11 <br />TIME BUDGETS /ACTIVITY ................................................................................................. ............................... <br />11 <br />SOURCES OF WHOOPING CRANE MORTALITY DURING MIGRATION ......... ............................... <br />11 <br />COLLISION WITH UTILITY LINES ........................................................................................ ............................... <br />11 <br />SHOOTING......................................................................................................................... ............................... <br />11 <br />DISEASE............................................................................................................................ ............................... <br />12 <br />DATA GAPS AND PROPOSED PROTOCOLS ............................................................. ............................... <br />12 <br />SUSPENDEDSEDIMENT ...................................................................................................... ............................... <br />12 <br />GROUNDWATER HYDROLOGY ........................................................................................... ............................... <br />12 <br />HISTORIC DATA NOT BEING REPLICATED DURING PROGRAM .................... ............................... <br />12 <br />VEGETATION DENSITY ...................................................................................................... ............................... <br />12 <br />OVERHEAD VISIBILITY ...................................................................................................... ............................... <br />12 <br />WATERVELOCITY ............................................................................................................. ............................... <br />12 <br />FOODAVAILABILITY ......................................................................................................... ............................... <br />13 <br />CONCLUSION................................................................................................................... ............................... 13 <br />LITERATURE CITED ...................................................................................................... ............................... 14 <br />Draft Baseline Report — Whooping Crane Section 2 <br />