Movement ecology of songbirds during migratory periods

鸣禽迁徙期间的运动生态学

• 批准号: RGPIN-2019-06857
• 负责人: Taylor, Philip
• 金额: $ 2.4万
• 依托单位: Acadia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716505
• 关键词: Movement; ecology; songbirds; during; migratory

Migratory birds undertake long-distance movements yearly between over-wintering and breeding areas. During these migrations they must stopover in often unfamiliar landscapes to rest and refuel for subsequent flights. These stopover periods are important to the life history of the individuals since a considerable portion of yearly mortality likely occurs during them, and choices made may influence subsequent survival or breeding success. Because of the small size of many passerine birds (they are difficult to track through space and time), there is little known about these behaviours at the scales required. My lab has developed an automated system of VHF telemetry (motus.org) that can be used to track small passerine birds. In previous work we have shown that during stopover, individuals may move considerable distances over landscapes during the fall migratory period. Here, we propose to extend our work on stopover to the spring period (by marking birds on the wintering grounds), to initiate additional demographic studies during the overwintering period, and to experimentally test two hypotheses regarding the function of regional-scale movements in fall. The results will help elucidate the function of these movements, and provide insight into their demographic consequences.

候鸟每年在越冬地和繁殖地之间进行长距离迁徙。在这些迁徙过程中，它们必须在通常不熟悉的地方停留，休息并为随后的飞行加油。这些中途停留的时期是重要的生活史的个人，因为相当一部分的年度死亡率可能发生在他们，并作出选择可能会影响随后的生存或繁殖成功。由于许多雀形目鸟类的体型很小（它们很难在空间和时间上进行跟踪），人们对这些行为所需的尺度知之甚少。我的实验室开发了一个自动化的VHF遥测系统（motus.org），可以用来跟踪小型雀形目鸟类。在以前的工作中，我们已经表明，在中途停留，个人可能会移动相当大的距离在秋季迁徙期间的景观。在这里，我们建议延长我们的工作中途停留到春季（标记鸟类越冬的理由），在越冬期间启动额外的人口统计学研究，并通过实验测试两个假设的功能，区域规模的运动在秋季。结果将有助于阐明这些运动的功能，并提供洞察其人口后果。