This seems like a logical problem to me, snip from CNN:
SAN MARCOS, Texas (AP) — Texas State University’s plan to build the nation’s largest “body farm” of cadavers is on hold over concerns that buzzards could endanger nearby planes.
The university’s scrapped its proposed site and began scouting a new location for what would be only the third body farm in the United States. The farms are used by scientists who bury cadavers to study human decomposition to help police better determine the time and manner of death at crime scenes.
Texas State had hoped to begin burying bodies later this year on a 17-acre (6.9-hectare) site on Texas Highway 21 near the San Marcos Municipal Airport. But after meeting with the airport’s commission Tuesday, the university dropped the plan out of concern that buzzards would pose a risk to pilots.