@misc{indiciae6ce0bb9922d4,
  title = {Conservation of herons},
  author = {H. Hafner and R.V. Lansdown and J.A. Kushlan and Robert W. Butler and T. W. Custer and I.J. Davidson and R.M. Erwin and J.A. Hancock and A.M. Lyles and M. Maddock and L. Marion and G. Morales and T. Mundkur and C. Perennou and O. Pineau and D. Turner and P. Ulenaers and J. van Vessem and L. Young},
  year = {2000},
  url = {https://pubs.usgs.gov/publication/5211044},
  note = {Source identifier: 5211044}
}