Tham khảo Lột_xác

  1. ↑ Terres, J. K. (1980). The Audubon Society Encyclopedia of North American Birds. New York, NY: Knopf. tr. 616–617. ISBN 978-0-394-46651-4. 
  2. ↑ Lindström, A.; Nilsson, J.Å. (1988). “Birds doing in the octopus way: Fright moulting and distraction of predators”. Ornis Scandinavica 19 (2): 165–166. JSTOR 3676468. doi:10.2307/3676468.