English: "Saguaro boot" with three holes. The Saguaro's scar tissue has connected three different nesting holes. Birds peck out a nest one season but don't use it until the next season.
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{{Information |Description ={{en|1="Saguaro boot" with three holes. The Saguaro's scar tissue has connected three different nesting holes. Birds peck out a nest one season but don't use it until the next season. }} |Source ={{own}} |Author