Show by subject Moths Diversity of forms of moths (Heterocera). Portraits II Portraits of vertebrates and insects taken in free nature of South America, North America and Europe. Defensive habits Defensive habits in mammals, birds, reptiles and crustaceans. Closed nests Examples of closed bird nests. Open nests Examples of open bird nests. Colours of the nature: Birds Range of colors in birds. Recently added Periodic plumage changes in birds Individual variability