PeerJ Author 170 Points Contributions by role Author 100 Preprint Author 70 Contributions by subject area Ecology Zoology Robyn L Bailey PeerJ Author Summary Conservation Biology Ecology Past or current institution affiliations Cornell University Work details Project Leader, NestWatch Cornell Lab of Ornithology Citizen Science PeerJ Contributions Articles 1 Preprints 1 March 11, 2014 Occurrence of twin embryos in the eastern bluebird Robyn L. Bailey, Gerald E. Clark https://doi.org/10.7717/peerj.273 PubMed 24688852 March 11, 2014 - Version: 2 Occurrence of twin embryos in the eastern bluebird Robyn L. Bailey, Gerald E. Clark https://doi.org/10.7287/peerj.preprints.186v2