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: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=739147
• 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.

候鸟每年都会在越冬地和繁殖地之间进行长途迁徙。在这些迁徙过程中，它们必须在通常不熟悉的风景中停留，为后续航班休息和加油。这些中途停留期对于个体的生命史很重要，因为每年很大一部分死亡可能发生在这段期间，并且所做的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体型较小（它们很难通过空间和时间进行追踪），因此人们对所需规模的这些行为知之甚少。我的实验室开发了一种 VHF 遥测自动化系统 (motus.org)，可用于追踪小型雀形目鸟类。在之前的工作中，我们已经表明，在秋季迁徙期间，在中途停留期间，个体可能会在景观上移动相当长的距离。在这里，我们建议将我们的中途停留工作延伸到春季（通过在越冬地标记鸟类），在越冬期间启动额外的人口统计研究，并通过实验检验关于秋季区域规模运动功能的两个假设。研究结果将有助于阐明这些运动的功能，并深入了解其人口影响。