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Full-Text Articles in Organisms

Silence Is The Loudest Sound, Emma Christian Oct 2014

Silence Is The Loudest Sound, Emma Christian

Honors College

Rhinoceros poaching is an act of killing a rhinoceros in order to take its horn, which is then used for human consumption or for cultural traditions. Both the Asian and the African rhinoceros are targets because of the demand from China, Vietnam, Yemen, and other countries around the world. Traditional Chinese Medicine practice is the main demand for rhinoceros horn and this demand in rhinoceros horn has caused an increase in the black market. Conservation of the rhinoceros is decreasing primarily because the price of rhinoceros horn is more than double the average household income in South Africa, thus making …


Territorial Aggression Increases Along An Urban Gradient In Resident But Not Migratory Song Sparrows, Darlene Turcotte Apr 2014

Territorial Aggression Increases Along An Urban Gradient In Resident But Not Migratory Song Sparrows, Darlene Turcotte

Honors College

During the breeding season, birds behave more aggressively toward rivals to maintain and defend territories. Resident birds are thought to be more aggressive than migratory birds because they need to maintain a territory year round. Furthermore, birds in urban environments can exhibit more aggressive behaviors than their rural counterparts because of the bolder behavioral characteristics required to colonize urban habitats. In this study, we investigated how migration strategy and landscape composition interact to affect territory defense in two subspecies of Song Sparrow (Melospiza melodia). To evoke an aggressive response, we simulated invasions by broadcasting songs from within a …