Record-Sized Flock of Whooping Cranes (Grus americana) Observed Staging in the Central Platte River Valley During Autumn 2021

IF 0.7 4区生物学 Q3 ORNITHOLOGY

Waterbirds Pub Date : 2023-09-18 DOI:10.1675/063.045.0413

David M. Baasch, Matt Rabbe, Amanda H. Medaries, Matthew R. Schaaf, Bethany L. Ostrom, Joshua D. Wiese, Jenna M. Malzahn, Timothy J. Smith

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引用次数: 1

Abstract

Increases in population size and reductions in suitable migration stopover habitat associated with drought, water development, and agricultural practices, along with conspecific attraction, are hypothesized mechanisms for increasing flock sizes of migrating Whooping Cranes. During autumn 2021, we observed such a phenomenon during a period of drought in the central Great Plains when 46 Whooping Cranes gathered as a single flock in the central Platte River valley. We provide a detailed account of how this larger aggregation formed from 5 smaller groups, behavioral observations, and environmental conditions experienced during this event including river flow, ambient temperature, and wind and drought conditions. Here, we report considerations for environmental and hydrologic conditions preceding and during this event as well as use patterns and behaviors we observed while the largest single flock of Whooping Cranes ever documented in the United States portion of the migration corridor was in the central Platte River valley.

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2021年秋季，在中央普拉特河谷观测到创纪录规模的鹤群(美洲鹤)

与干旱、水资源开发和农业实践相关的种群规模的增加和适宜迁徙中途停留栖息地的减少，以及同种吸引力，是增加迁徙鸣鹤群体规模的假设机制。在2021年秋季，我们在大平原中部的干旱时期观察到这样的现象，当时46只呼鸣鹤在普拉特河谷中部聚集成一群。我们详细描述了这个更大的群体是如何从5个较小的群体、行为观察和环境条件中形成的，包括河流流量、环境温度、风和干旱条件。在这里，我们报告了在此事件之前和期间对环境和水文条件的考虑，以及我们观察到的使用模式和行为，而在美国部分迁徙走廊中有记录的最大的单一群是在普拉特河谷中部。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Waterbirds 生物-鸟类学

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Waterbirds is an international scientific journal of the Waterbird Society. The journal is published four times a year (March, June, September and December) and specializes in the biology, abundance, ecology, management and conservation of all waterbird species living in marine, estuarine and freshwater habitats. Waterbirds welcomes submission of scientific articles and notes containing the results of original studies worldwide, unsolicited critical commentary and reviews of appropriate topics.