have upon the location of receiving antennas. This variable was treated as a potential exclusion variable due to the uncertain results of future research activity. Reliability of the Data: The data mapped in Figure 17 was obtained from very general maps published by the U.S. Fish and Wildlife Service. The Pacific, Central, Mississippi and Atlantic flyways were combined from individual maps of those areas. The boundaries of these flyways were ill defined in the original information and the limits of the flyways are somewhat arbitrary. Perhaps more importantly, graphs showing the distribution of migrating birds across these corridors or other similar data was not available to the project team. Therefore, while the land areas mapped as flyways appear correct, there may be discrepancies from state to state. The best approach to this variable would have been to compile information for each state from the state fish and wildlife agency and compile the map nationally from this more specific information. However, time constraints prevented this approach from being utilized. The information shown in Figure 17 does have factual validity and it certainly indicates the importance of research in the area of microwave effects on migratory bird species. Spatial Coverage: 5441 grid cells are indicated as being within the flyways of migratory waterfowl. M. SEISMIC HAZARDS - FIGURE 18 Rationale: Published information about the receiving antennas indicate that they are not designed to withstand earthquakes. Although this variable could be considered as a design variable, it may be that the cost for undertaking earthquake resistant rectennas would be extremely high, and, the areas with high quake risks would be avoided. Therefore, seismic hazards were mapped and are considered as potential exclusion varibles.
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