Show by subject Open nests Examples of open bird nests. Fungi with lichens Diversity of forms in fungi and lichens. Colours of the nature: Butterflies Composition of colors and design in butterflies. Defensive habits Defensive habits in mammals, birds, reptiles and crustaceans. Impressions of nature I Sexual dimorphism II Examples of differences in the appearance of males and females of the same species of arthropods, birds and mammals (compare on successive photos). Recently added Periodic plumage changes in birds Individual variability