The table presented is from two places. One is from a Master's thesis and it also is in a scientific publication (see links below). I thought that might be important if anyone wants to go to the source.Can you help me understand how this data is compatible with any claim that delaying seasons had "no effect?"
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://trace.tennessee.edu/cgi/viewcontent.cgi?article=10876&context=utk_gradthes
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://naturalresources.tennessee.edu/wp-content/uploads/sites/24/2024/05/Assessing-wild-turkey-productivity-before-and-after-a-14%E2%80%90day-delay-in-the-start-date.pdf).
What is not in that table is the fact that nest success from one year to the next varied a LOT. The before-after setup controls for location to some degree in this case, so in some counties, like mwbenelli1996 said, there are differences from county to county. The two control counties just had lower success rates year to year while the treatment counties had higher rates year to year.
Southern Sportsman is right, there is a big jump from the before to after average nest success rate in the treatment counties. But in reading the paper, it indicates there was so much variation from year to year in nest success rate that it was a wash. They do not present the raw data, but do present the general or summary stats. The paper says the before treatment rate was expected to be between 21%-35% and the after treatment rate was expected to be between 25%-45%. There's a LOT of year to year variation. When there is that much overlap in percentages, its not legitimate to say there is a certain and distinct difference. I hope that helps.