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- Saguaro_boot abstract "A saguaro boot is the hard shell of callus tissue, heavily impregnated with lignin, that a saguaro cactus (Carnegiea gigantea) creates to protect the wound created by a bird's nesting hole. The bird pecks through the cactus skin, then excavates downward to hollow out a space for its nest. When the saguaro dies, its soft flesh rots, but its woody infrastructure lasts much longer. So does the hollowed-out callus whose roughly boot-like shape gives it the name of "saguaro boot."Several different kinds of birds create nest holes in saguaro cactus. The Gila woodpecker (Melanerpes uropygialis) creates small holes (about 5 cm across) at midlevel on the cactus, where the ribs are far apart, feeding on larvae under the cactus skin. The larger gilded flicker (Colaptes chrysoides) drills bigger holes higher up, where ribs are close together, because its beak is strong enough to break through rib tissue.The saguaro responds to the bird's damaging its tissue by secreting a resinous sap that, over time, hardens into a bark-like shell that prevents the cactus from losing fluid and also protects the nest hole by making it waterproof. The bird's nesting hole requires not only the bird's making a hole but also the cactus's lining the hole - it is not ready for use as a nest until a year after its creation. Many saguaros are home to multiple nests; if birds excavate adjoining hollows, a saguaro boot may be formed with more than one opening.Native Americans of the Seri group used saguaro boots to store or carry water. It is now illegal to collect saguaro boots from the wild in Arizona.Some desert moth caterpillars also make tunnels inside saguaro cactus. The resulting dried callus that forms around their tunnels has a flattened disk structure where the caterpillar exits instead of the larger hole seen on a saguaro boot.".
- Saguaro_boot thumbnail SaguaroBoot_2.jpg?width=300.
- Saguaro_boot wikiPageID "30616095".
- Saguaro_boot wikiPageLength "5985".
- Saguaro_boot wikiPageOutDegree "16".
- Saguaro_boot wikiPageRevisionID "680139397".
- Saguaro_boot wikiPageWikiLink Cactus.
- Saguaro_boot wikiPageWikiLink Callus.
- Saguaro_boot wikiPageWikiLink Category:Bird_breeding.
- Saguaro_boot wikiPageWikiLink Category:Cacti_of_Mexico.
- Saguaro_boot wikiPageWikiLink Category:Flora_of_Arizona.
- Saguaro_boot wikiPageWikiLink Category:Flora_of_the_Sonoran_Deserts.
- Saguaro_boot wikiPageWikiLink Category:Flora_of_the_Southwestern_United_States.
- Saguaro_boot wikiPageWikiLink Category:North_American_desert_flora.
- Saguaro_boot wikiPageWikiLink Category:Pachycereeae.
- Saguaro_boot wikiPageWikiLink Gila_woodpecker.
- Saguaro_boot wikiPageWikiLink Gilded_flicker.
- Saguaro_boot wikiPageWikiLink Lignin.
- Saguaro_boot wikiPageWikiLink Saguaro.
- Saguaro_boot wikiPageWikiLink Seri_people.
- Saguaro_boot wikiPageWikiLink Tree_hollow.
- Saguaro_boot wikiPageWikiLink File:SaguaroBoot_2.jpg.
- Saguaro_boot wikiPageWikiLinkText "saguaro boot".
- Saguaro_boot hasPhotoCollection Saguaro_boot.
- Saguaro_boot wikiPageUsesTemplate Template:Reflist.
- Saguaro_boot subject Category:Bird_breeding.
- Saguaro_boot subject Category:Cacti_of_Mexico.
- Saguaro_boot subject Category:Flora_of_Arizona.
- Saguaro_boot subject Category:Flora_of_the_Sonoran_Deserts.
- Saguaro_boot subject Category:Flora_of_the_Southwestern_United_States.
- Saguaro_boot subject Category:North_American_desert_flora.
- Saguaro_boot subject Category:Pachycereeae.
- Saguaro_boot hypernym Shell.
- Saguaro_boot type Software.
- Saguaro_boot comment "A saguaro boot is the hard shell of callus tissue, heavily impregnated with lignin, that a saguaro cactus (Carnegiea gigantea) creates to protect the wound created by a bird's nesting hole. The bird pecks through the cactus skin, then excavates downward to hollow out a space for its nest. When the saguaro dies, its soft flesh rots, but its woody infrastructure lasts much longer.".
- Saguaro_boot label "Saguaro boot".
- Saguaro_boot sameAs m.0g9whcp.
- Saguaro_boot sameAs Q7399386.
- Saguaro_boot sameAs Q7399386.
- Saguaro_boot wasDerivedFrom Saguaro_boot?oldid=680139397.
- Saguaro_boot depiction SaguaroBoot_2.jpg.
- Saguaro_boot isPrimaryTopicOf Saguaro_boot.