Eurasian Collared Dove

The purpose of conducting this experiment is to find out how an invasive specie affects different native animals. In the past, invasive species have spread disease, created more competition, and had grown exponentially to then destroyed land. By comparing populations between native birds and an invasive specie, in this case the Eurasian Collared Dove, we can find out how the native birds were affected. We are examining how the Eurasian Collared dove affected populations of native birds in San Diego. Further research would allow us to view the reasoning behind what occurred to the native species. We are choosing the view effects on San Diego’s native birds because the climate in San Diego is considered fair and stable year round fluctuating

It would seem like they would create more competition for the limited food supply that they share. So if the Eurasian Collared Dove invades into the San Diego region, then the population of the Mourning Dove and the Rock Pigeon will decrease due to increased competition for the same food source. However after researching up the populations of native birds over time I concluded that this is wrong. I noticed that as the Eurasian Collared Dove’s population increased the same thing occurred with the Mourning Dove and Rock Pigeon. I would take population percentages from the same squares for each year and bird and average them all out and I would also take percentages 5 years at a time. We found that the Eurasian Collared Dove started to grow from .33% to 12% from 2005-2010. Another piece of data that stood out was the Mourning Dove growing about 13% at the same time the Eurasian Collared Dove did. After these spikes the rest of the birds began to grow about 3-5% every 5 years. I believe this occurred because the Eurasian Collared Dove carried a disease that killed other native birds. These other native birds would die off making the food supply of the Mourning Dove and the Rock Pigeon to increase causing their population to also