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Dominance Hierarchies In Horses: Comparing And Contrasting Different Methods For Assessing Hierarchies, Devyn Bailey
Dominance Hierarchies In Horses: Comparing And Contrasting Different Methods For Assessing Hierarchies, Devyn Bailey
Ursidae: The Undergraduate Research Journal at the University of Northern Colorado
Understanding animal social structures is imperative when it comes to the care, housing and handling of large herd animals. Knowing how hierarchies are structured, along with environmental and physiological aspects that may affect them, will allow owners and breeders to house and care for their animals. The aim of my study was to better understand two methods used to assess dominance hierarchies in horses, Equus caballus, and to predict which method would be more useful for owners housing domestic horses. I designed an experiment where I compared a structured method, the paired feeding test, with behavioral observations from the …
Changes In Canyon Wren Vocalizations In Advance Of The Breeding Season, Anne Rose
Changes In Canyon Wren Vocalizations In Advance Of The Breeding Season, Anne Rose
Ursidae: The Undergraduate Research Journal at the University of Northern Colorado
Many animals adjust their signaling patterns throughout the year. Birds may use different signals as they increase association with mates and expend more energy in territory defense. Song is typically associated with territorial defense and pair bonding between mates, while calls often relate to maintaining contact between foraging birds. We studied variations in vocal behavior in canyon wrens (Catherpes mexicanus) by recording a pair across the midwinter-early spring transition preceding nesting. Recordings were made at the same time weekly for ten weeks. Call rate decreased during this period, contrasting strongly with increasing song production. The occurrence of low …