@article{Croft-2013-4155,
  author = {Croft, S and Budgey, R and Pitchford, J and Wood, A},
  title = {The Influence of Group Size and Social Interactions on Collision Risk with Obstacles},
  journal = {Ecological Complexity},
  year = {2013},
  month = {dec},
  publisher = {Elsevier},
  volume = {16},
  pages = {77--82},
  doi = {10.1016/j.ecocom.2012.06.002},
  url = {https://www.sciencedirect.com/science/article/pii/S1476945X12000499},
  keywords = {Wind Energy, Collision, Avoidance, Attraction, Birds},
}