https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763013296774&signature=e1873c39cf77e7a902c618685c713f63&articleTitle=The+Migration+Ecology+of+Birds&articleAuthor=Ian+Newton&publicationTitle=The+Migration+Ecology+of+Birds&language=&publicationType=1&publishYear=2007&isn=9780125173674&publisher=