Graphs

I went through each day of observation for each pair and added all of the observations together to create some graphs to show the breakdown of the behaviors for the individual birds in each pair.

Parasitic Jaeger Pair 1 was observed for a total of 166 minutes and this is the graph below.

I also made a scatter plot for the distances I recorded for when each pair began defending against me as I approached their nests.  You can see that the distance increases as incubation length (the date) increases. If I had a better idea of when they actually initiated their nests, and was able to record more points, the X-axis would look differently, but for these purposes it is just the date the distances were recorded. The date is valued as the day of the year; for example June 16th is day 167 of the year. I appreciate questions and suggestions for changing any of these graphs, so please share if you have them.

Parasitic Jaeger Pair 2 was observed for a total of 241 minutes and this is the graph below.

I already stated before, that based on these observations and information from other studies by Martin and Barry from 1978, the female primarily attends the brood, so the female is likely the Light Morph of PAJA Pair 2. Below is the chart for the distance an observer could be from the nest before the pair began defending.

There is another study by Maher from 1974 that states, "repeated visits by humans to a nest result in reduced aggression." However, based off my observations I would say that they increase aggression, at least by increasing the distance a potential predator can approach before they defend against that predator.

Well, that is it for these observations and this blog. Thanks for reading and please leave comments, questions, and whatever you want to share with me!