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Speciation And Hybridization In Jamaican-Endemic Streamertail Hummingbirds (Trochilus Polytmus And T. Scitulus), Caroline D. Judy
Speciation And Hybridization In Jamaican-Endemic Streamertail Hummingbirds (Trochilus Polytmus And T. Scitulus), Caroline D. Judy
LSU Doctoral Dissertations
Streamertails hummingbirds (Trochilus polytmus and T. scitulus) are recently diverged sister taxa that appear to have speciated in situ on the island of Jamaica. They are distinguished by male bill color, a secondary sexual trait that is coral red in T. polytmus and jet black in T. scitulus. They hybridize in a narrow zone where their ranges meet in eastern Jamaica. In Chapter 2, I performed a formal population survey of T. scitulus to determine the size of the population, which was unknown. I determined that the total population contains well over 100,000 individuals despite its limited …
Patterns In Abundance Of Louisiana’S Avifauna Revealed By The Louisiana Bird Atlas Project, Matthew L. Brady
Patterns In Abundance Of Louisiana’S Avifauna Revealed By The Louisiana Bird Atlas Project, Matthew L. Brady
LSU Master's Theses
The Louisiana Bird Atlas Project is a multi-year citizen science effort designed to quantify bird distribution and abundance for all species regularly occurring in the state of Louisiana during two time periods: summer and winter. Data were collected by volunteers in a citizen science framework across eight years, from 2007 to 2014. A total of 351 species was recorded (254 during the Summer Bird Atlas and 315 during the Winter Bird Atlas). Maps showing distribution and relative abundance for each species were generated within a Geographical Information System, and were accompanied by short descriptions of status, distribution, abundance, and other …