1. Able, K. P., Environmental influences on the orientation of free-flying nocturnal bird migrants. Anim. Behav. 22 (1974) 224–238.
2. Able, K. P., The flight behaviour of individual passerine nocturnal migrants: a tracking radar study. Anim. Behav. 25 (1977a) 924–935.
3. Able, K. P., The orientation of passerine nocturnal migrants following offshore drift. Auk 94 (1977b) 320–330.
4. Able, K. P., Mechanisms of orientation, navigation, and homing, in: Animal migration, orientation, and navigation, pp. 283–373. Ed. S. A. Gauthreaux Jr. Academic Press, New York 1980.
5. Able, K. P., The effects of overcast skies on the orientation of free-flying nocturnal migrants, in: Avian navigation, pp. 38–49. Eds. F. Papi and H. G. Wallraff. Springer-Verlag, Berlin 1982a.