| 2001 | | Geb/SU, F:23x30 cm, 240 S, über 600 Farbfotos, zahlr. Karten und Diagramme. | WG: Buch | | The breeding cycle of birds - courtship, mating, laying and incubationg eggs, brooding, feeding and defending chicks - is one repeated from season to season. | [E] | |