1. Examine the number and species of bird traffic victims on selected roads in Denmark.
2. In order to see weather there has been a decrease during the last decades a comparison with the results of other researches around the world is planned to find out wheather Darwin's theory of the survival of the fittest is valid also in the case of traffic deaths
3. .Examine, whether road-killed birds offer a true reflection of the live bird population along the checked roads, as stated in several works, (e. g. Göransson et al. 1978: 99), by point counting the birds along the routes, and thus maybe get a hint of whether traffic casualties can be a new tool in monitoring the environment.
4. Examine the percentage of traffic-killed young birds with fault bars to see wheather the territories near roads are of a less good quality, as stated for the Willow Warbler and Great Tit (Grajetzki 1991,1992, Bairlein & Sonntag 1994, Reijnen & Foppen 1994, 1995). As a control group window-killed birds will be used.
5. Examine whether different populations of the same species or family from different parts of their range have the same abilities to learn how to avoid vehicles. This will be done by comparing the various results of other road-casualty studies.
6. Examine where the most frequent collisions happen. This will be done by mapping all the sites where a traffic-killed bird is found on maps 1: 25,000.
7. Examine the question of the incidence of errors in a study like this, e. g. notes will be written for each found bird about where on the road the carcase has been found, how visible it was and estimated time of death. Furthermore the status of the birds involved will be taken into consideration.
8. Examine the possibilities of increasing security for the birds in future road construction and in maintaining the existing roads.