This study aimed to identify whether Siberian Crane Leucogeranus leucogeranus regularly fly after sunset, and what determines a cranes' decision to continue its migration in darkness. Based on observations in East Siberia (2012–2021), 4–69% of cranes passed over observation points during the night, regardless of the presence of positive environmental factors suitable for cranes, such as wetland-rich areas, and continued in the dark towards areas with inappropriate habitat for their landing. This suggests that their decision to continue migrating after nightfall is induced by internal factors and contributes insights into the phenomenon of nocturnal crane migrations.

Victor G. Degtyarev

ORNITHOLOGICAL SCIENCE

ORNITHOLOGICAL SCIENCE 发表评论、原创文章、简短的交流和评论，涵盖鸟类学的各个方面。手稿是根据其对原始数据和想法或解释的贡献来判断的。所有文章均由提交论文领域的至少两名研究人员专家进行同行评审。手稿在必要时进行了编辑以澄清和节约。 ORNITHOLOGICAL SCIENCE 的目标是在符合同行评审要求和正常出版限制的情况下尽快出版。

Ornithological Science publishes original research articles, brief communications, and reviews covering all aspects of ornithology. Manuscripts are evaluated based on their contribution to original data, ideas, or interpretations. All submitted articles undergo peer review by at least two experts in the field, and editing is performed when necessary to clarify and streamline the content. The goal of Ornithological Science is to publish research findings as quickly as possible while adhering to peer review requirements and standard publication constraints.

《Ornithological Science》发表原创研究文章、简短交流和评论，涵盖鸟类学的各个方面。手稿的评审依据其对原始数据、观点或解释的贡献。所有提交的文章均由至少两名该领域的专家进行同行评审，并在必要时进行编辑以确保内容的清晰和简洁。《Ornithological Science》的目标是在遵循同行评审要求和正常出版流程的前提下，尽快发布研究成果。

Category	Quartile
生物学	4
生物学, 鸟类学	4

Migration of Siberian Crane Leucogeranus leucogeranus in darkness

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