Related Clues:

• Darwin's study
• Ejection
• It can be found in a tree
• Genealogist's quest
• Start of a trip in a bathysphere
• Ousting
• Information in a tree
• Half of a mountaineering expedition
• Line of descent
• Eagle
• Mountain climber's return
• Totem pole's story, sometimes
• Trace of blood?
• Landing preceder
• Taking away