• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 2 · Nature
• 25 · earth, world as celestial body
• 25F · animals
• 25F3 · birds

25F3(+4) · birds (+ animal behaviour)

• 25F3(+42) · birds (+ feeding and care of young)
• 25F3(+44) · birds (+ relationship between animals)
• 25F3(+45) · birds (+ animals eating and drinking)
• 25F3(+49) · birds (+ audible means of communication of animal(s): roaring, crying, singing, barking, mewing, neighing, chirping, etc.)