@article{Hjertaas_1991, title={Unusual Barn Swallow Nest Site}, volume={49}, url={https://bluejayjournal.ca/index.php/bluejay/article/view/5079}, DOI={10.29173/bluejay5079}, number={4}, journal={Blue Jay}, author={Hjertaas, Dale}, year={1991}, month={Dec.} }