Jacquelyn K. Grace

Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX 77843

Duck Non-Breeding Body Condition Differs by Sex, Age, and Year on the Texas Mid-Coast

SEAFWA Journal Volume 9, March 2022

Waterfowl are of significant cultural, economic, and conservation importance along the Texas Gulf Coast. Millions of ducks utilize this region as they move along the Central Flyway each winter. Understanding body condition patterns for these birds has important implications for overwinter survival, breeding success, and population regulation. This is especially true for females, which are typically the limiting sex in ducks. Herein, we an- alyze sex- and age-specific differences in body condition of non-breeding dabbling ducks over the winter hunting season in coastal Texas. We collab...

Daily Weather Affects Body Condition, Sex, and Age Ratios of Harvested Dabbling Ducks in Texas

SEAFWA Journal Volume 9, March 2022

Duck activity patterns have anecdotally been associated with weather for thousands of years. However, these relationships have rarely been tested scientifically. We hypothesized that characteristics of wintering ducks harvested by hunters would be associated with daily weather conditions (precipitation, temperature, and wind speed), and specifically, that smaller-bodied ducks and those with poor body condition would be harvested less frequently in adverse weather conditions relative to 30-year daily normals. We evaluated these hypotheses using beta regression modeling and general...