@misc{kirby_2018_1235907, author = {Kirby, Ronald E. and Sargeant, Glen A. and Shutler, Dave}, title = {{Haldane's rule and American black duck × mallard hybridization}}, month = apr, year = 2018, publisher = {Zenodo}, doi = {10.1139/z04-169}, url = {https://doi.org/10.1139/z04-169} }