Aerial flights for population counts often happen this time of year. They try to time the flights before the bucks and bulls drop their antlers giving them a better idea of the sex ratio within a population.

Zabransky, C. J., Hewitt, D. G., Deyoung, R. W., Gray, S. S., Richardson, C., Litt, A. R., & Deyoung, C. A. (2016). A detection probability model for aerial surveys of mule deer. The Journal of Wildlife Management, 80(8), 1379–1389. https://doi.org/10.1002/jwmg.21143

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Thiele, D. (n.d.). Chapter 2 Mule Deer (Odocoileus hemionus). Retrieved January 24, 2023, from https://wgfd.wyo.gov/WGFD/media/content/PDF/Wildlife/Handbook-BioTechniques/02-MuleDeer.pdf

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Aerial Survey of Mule Deer. (2019). https://www.ndow.org/wp-content/uploads/2021/11/19B-Cody-McKee-Aerial-Survey-Mule-Deer-PowerPoint-Presentation.pdf

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Why aerial surveys are important to managing big game in Idaho | Idaho Fish and Game. (n.d.). Idfg.idaho.gov. Retrieved January 24, 2023, from https://idfg.idaho.gov/blog/2019/12/why-aerial-surveys-are-important-managing-big-game-idaho

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