Date of this Version
Since 1998 the DAVVL has been the official collecting centre for bird strike reports in Germany. Thanks to the voluntary supply of reports from airlines the DAVVL had been collecting reliable data even for many more years even before 1998. The typical annual variations of the bird strike development are well known. In 1999 and 2000 there were distinct deviations from the usual annual variations of the reports. The reasons are investigated and presented. It might be concluded that in 1999 reporting problems of a prominent German airline were the reason of the anomalous trend. In 2000 the weather development temporarily occurring in most parts of the country was likely responsible for the deviations from the usual monthly bird strike numbers.