Gorke M, Brandl R
Lehrstuhl für Tierökologie I, Universität Bayreuth, Postfach 101251, D-8580, Bayreuth, Federal Republic of Germany.
Oecologia. 1986 Sep;70(2):288-290. doi: 10.1007/BF00379253.
This paper describes some spatial foraging strategies observed in the course of the breeding season in five adult radio-tagged black-headed gulss (Larus ridibundus). 1. Individual foraging distances increased continuously during the nesting period. 2. The maximum foraging distance observed was 18.5 km. 3. All birds showed nearly constant flight directions over the whole breeding period. 4. It is suggested that the continuous increase in foraging distances reduces intraspecific competition around the colony. 5. Because of long foraging distances it seems to be advantageous to use only a small constant foraging sector. This behaviour can probably optimize spatial memory and enhance energetic and temporal efficiency.
本文描述了在繁殖季节观察到的五只佩戴无线电追踪器的成年黑头鸥（Larus ridibundus）的一些空间觅食策略。1. 在筑巢期，个体的觅食距离持续增加。2. 观察到的最大觅食距离为18.5公里。3. 所有鸟类在整个繁殖期都表现出几乎恒定的飞行方向。4. 有人认为，觅食距离的不断增加减少了群体周围的种内竞争。5. 由于觅食距离长，只使用一个小的恒定觅食区域似乎是有利的。这种行为可能会优化空间记忆并提高能量和时间效率。
