only less than 20% responded that they left their grass long, primarily to discourage gulls and geese. Based on our responses, the CM with the combination of 19 users and a high success ranking was removing shrubs, brush and other diverse habitat. Maintaining long grass and noise harassment, although used by more respondents, 23 and 22 respectively, had lower success
rankings than removing diverse habitat. When airports were asked to state the method by which they assessed the outcomes of their CM, anecdotal methods such as reports from staff and past experience were used more often than referring to a strike reporting system.