| 1993 | | Geb, F:15,5x23,5 cm, 306 S. | WG: Buch | | Population Trends in Grassland, Shrubland, and Forest Birds in Eastern North America (R.A. Askins); The Habitat Concept in Ornithology (W.M. Block, L.A. Brennan); Nonbreeding Social Organization in Migratory and Resident Birds (E.Matthysen); Predation and the Limitation of Bird Numbers (I.Newton); Sibling Competition, Hatching Asynchrony, Incubation Period, and Lifespan in Altricial Birds (R.E.Ricklefs); Index. | [E] | | Current Ornithology