Summer and winter ranges of monarch butterflies (Danaus plexippus) in North America.
Brower, L.P. 1977.The Monarch migration. Natural History 86: 40-53.
Urquhart, F.A. 1960. The Monrch Butterfly. Universtiy Toronto Press, Toronto.
|
Summer and winter ranges of monarch butterflies (Danaus plexippus) in North America. Brower, L.P. 1977.The Monarch migration. Natural History 86: 40-53. Urquhart, F.A. 1960. The Monrch Butterfly. Universtiy Toronto Press, Toronto. |