An expandable radiocollar for elk calves

摘要: Expandable radiocollars, designed to monitor juvenile survival and movements, were placed on 132 neonatal elk (Cervus elaphus) in Yellowstone National Park during 1987-1990. A modified design of the same collar was 164 neonates Jackson herd northwest Wyoming 1990-1992. One calves 19 cast their collars before 15 July birth year. General deterioration col lar materials resu Ited i n loss Yel lowstone lars 1 2-1 8 months post-deployment. Separation breakaway tabs resulted 13 from 504 + 60 days post-deployment, but remaining remained for <4 years. These light-weight adaptable designs achieved study objectives. We provide recommendations future monitoring elk.