Show by subject Periodic plumage changes in birds Others Diversity of forms in slime molds and brown algae. Plant adaptations: Fire Adaptations of plants to areas exposed to frequent fire. Portraits III Portraits of vertebrates and insects taken in free nature of South America, North America and Europe. Plants Diversity of forms in plants. Cavities and burrows Examples of bird nests located in cavities and burrows. Recently added Periodic plumage changes in birds Individual variability