PeerJ Author 200 Points Contributions by role Author 200 Contributions by subject area Biodiversity Ecology Climate Change Biology Conservation Biology Zoology Natural Resource Management Tyler A Hallman PeerJ Author Summary Biodiversity Climate Change Biology Ecology Past or current institution affiliations Oregon State University PeerJ Contributions Articles 2 January 21, 2021 The influence of rare birds on observer effort and subsequent rarity discovery in the American birdwatching community Jesse A. Laney, Tyler A. Hallman, Jenna R. Curtis, W. Douglas Robinson https://doi.org/10.7717/peerj.10713 PubMed 33552730 November 7, 2019 Idiosyncratic changes in spring arrival dates of Pacific Northwest migratory birds W. Douglas Robinson, Christina Partipilo, Tyler A. Hallman, Karan Fairchild, James P. Fairchild https://doi.org/10.7717/peerj.7999 PubMed 31720118