| Publication Type: | Journal Article |
| Year of Publication: | 1984 |
| Authors: | Metcalfe, NB, Furness, RW |
| Journal: | Behavioral Ecology and Sociobiology |
| Volume: | 15 |
| Issue: | 3 |
| Date Published: | 1984 |
| ISBN Number: | 03405443 |
| Keywords: | Arenaria, Arenaria interpres, Scolopacidae |
| Abstract: | Many birds accumulate fat reserves prior to departure on long distance migration. Since there will be an increased food requirement during the pre-migratory period, it is to be expected that more time will be invested in foraging, at the expense of other activities. The allocation of time to anti-predatory behavior in migratory ruddy turnstones (adults) was found to decrease prior to migration (Fig. 1); non-migratory individuals (juveniles) showed no decrease over the same time period (Fig. 2). This is interpreted as a change in the optimal adult behavior, the cost of a reduced rate of resource accumulation outweighing the additional risk of predation which results from the decrease in vigilance. |
| URL: | http://www.jstor.org/stable/4599720 |
| Short Title: | Behavioral Ecology and Sociobiology |
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