@article{Chevallier2013,
  author    = {Jean Chevallier},
  title     = {Un busard cendr{\´e}, Circus pygargus, consommateur d'oeufs de Sternes pierregarins, Sterna hirundo},
  journal   = {Le Naturaliste Vend{\´e}en},
  volume    = {3},
  pages     = {132 -- 134},
  year      = {2013},
}