Male Contribution to Reproduction: A Random Occurrence or Indicator of Population Status?

Male Contribution to Reproduction: A Random Occurrence or Indicator of Population Status?

By Garrett Roberts, AQP Research Technician/Graduate Student, originally published in the Summer 2022 edition of Quail Call. 

Male contribution to reproductive output and its importance to population recovery and persistence in bobwhite quail is an understudied topic commonly overlooked in research. We know already that males tend to contribute more to total reproductive output in lower density/recovering populations, but what we don’t understand as well, is how much and when they contribute under other circumstances. Bobwhite quail exhibit a form of mating strategy known as ambisexual polygamy.

This is where both the male and female will contribute to parental care, both during incubation and after hatching. Both sexes will also have multiple mates throughout the summer breeding season.

Females are generally the targeted sex studied during this time, resulting in minimal return data for the male bobwhites throughout the season. The aim for this study is to analyze the variability of male contribution over time and between bobwhite populations on the primary study site of the Albany Quail Project, Tall Timbers, Livingston Place, The Jones Center at Ichauway, and Central Florida. All of these study sites have varying spring breeding densities, possibly resulting in varying levels of male contribution.

Starting this year, we have begun increasing our sample size of radio-tagged males on all study areas to gain a better understanding of their relative contribution to reproductive output. This data is being used for a master’s project for the current research technician and new graduate student of the Albany Quail Project, Garrett Roberts. Garrett is a North Alabama transplant, graduate of Auburn University, and has been with AQP for the past year.

This project will be ongoing for the next several years with the intent of determining how male contribution varies on sites with different densities and varying seasonal survivals. This valuable insight should show just how big of a role males play in the success of reproduction and the overall growth of the population.

 

Are Bobwhites Becoming More Wary?

Are Bobwhites Becoming More Wary?

By Justin Rectenwald | Project Collaborators: Albany Quail Project, Livingston Place, Central Florida Rangeland Quail Program, Tall Timbers, Ichauway, Rolling Plains Quail Research Ranch, originally published in the Summer 2022 edition of Quail Call. 

In 1931, Herbert Stoddard posed the question, “Are bobwhites becoming more wary?” in his classic book The Bobwhite Quail. He described how veteran quail hunters of that era with 30 or 40 years’ experience agreed that birds were getting more educated and more difficult to kill. He expounded on the fact that the birds had become quite unruly as they were becoming hard to mark down and shoot singles after the initial covey rise.

Stoddard further explained that on grounds that were becoming “heavily stocked” (at >1 bird per acre), that it was a new experience “to see the majority of coveys habitually flush out of shooting distance.” Even then, Stoddard asked, “How far will the process of education be carried?” The words written by Stoddard nearly 100 years ago sound eerily similar those we hear today. Unfortunately, this process of education has not seemed to slow down.

To address this question, the Albany Quail Project began a study nearly 30 years ago on several Albany area plantations that lasted for eight hunting seasons, and was aimed at understanding how radio-tagged coveys were interacting with the hunting party. The general consensus was that the hunting party only saw about half of the coveys that were available (most of which were pointed), and the other half that were not seen mostly held tight to avoid being detected.

Since the early 1990s, bird densities have at least doubled on many places and we have recently seen a string of years with above average adult survival that have resulted in an older and perhaps wiser age structure along with high fall densities. Both of these factors have likely played a large part in explaining why the birds have been much wilder and harder to get shots at. Because of this unruly behavior that has been observed over the last few years, there is a renewed interest in revisiting this study from the 1990s, to determine if birds are becoming even warier than they were in the past.

We restarted our covey-hunter interaction study this past season on several sites across the bobwhite range, including the primary study site of the Albany Quail Project, Livingston Place, Escape Ranch, Tall Timbers, Ichauway, and the Rolling Plains Quail Research Ranch in Texas. Our aim is to see how bobwhite behave compared to the original study in the 1990s, and to see how this varies between study sites.

We believe that the way coveys interact with hunters will vary between sites based on a variety of factors: bird density, age structure, cover conditions, and hunting style. We expect that on sites with higher densities and age structures that favor older, wiser birds, that the hunting party will see a higher percentage of coveys flushing wild, and fewer that are holding tight.

Beginning last fall, our staff of biologists and technicians rode along with the hunting parties on these six properties and tracked radio-tagged coveys to record what percentage are seen and how they are evading detection. After over 500 encounters in the first hunting season, preliminary results indicate that modern coveys seem much less likely to “hold” to avoid detection and are flushing wild about 30% more often than they did in the 1990s. It is unclear how much of these behaviors is being learned and how much is the result of being in a high-density population with high adult survival. We will continue this study for several more years to fully understand how far this process of education can be carried, and how much warier the birds have become.