Daily Activity Budgets and Movements of Winter Roosting Double-Crested Cormorants Determined by Biotelemetry in the Delta Region of Mississippi D. Tommy King; James F. Glahn; Keith J. Andrews Colonial Waterbirds, Vol. 18, Special Publication 1: The Double-Crested Cormorant: Biology, Conservation and Management. (1995), pp. 152-157. Stable URL: http://links.jstor.org/sici?sici=0738-6028%281995%2918%3C152%3ADABAMO%3E2.0.CO%3B2-K Colonial Waterbirds is currently published by Waterbird Society.
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Daily Activity Budgets and Movements of Winter Roosting Double-crested Cormorants Determined by Biotelemetry in the Delta Region of Mississippi D. TOMMY K ING',JA~IESF. GWHN' AND KEITHJ. AVDRE~VS"' 'US. Department of Agriculture, Denver Lllldlife Research Center Mississippi Research Station, Mississippi State, hfississippi 39762-6099, USA 'Present address: U.S. Department of .Agriculture, Animal Damage Control Stoneville, Mississippi 38776, YSX Abstract.-During the winters of 1990-91 and 1991-92, 59 Double-crested (:ormorants (Phulncl-oco~crx rcuritzrs) were captured and fitted with radio telemetn transn~ittersin the Delta region of Mississippi. The corn~orantswere monitored to determine the distances between night roosting sites and foraging locations, and the alnount of time spent foraging versus other acti~ities,such as d i ~ i n gloafing, , and day roosting. Double-crested (:ormorants flew an average of 15.7 km from their night roost to a foraging location during the winters of 1990-91 and 1991-9" D ~ ~ r i n g the winters of 1990-91 and 1991-92 foraging averaged 17.7% of cormorant daily activih. Key words.-Activih budgets, biotelemetn; Double-crested
