HD
6.4Flight of the Butterflies
Flight of the Butterflies
It takes two or three generations for the monarch butterfly to reach the Canadian breeding grounds, but it is one "supergeneration" that makes the 2,000 mile return trip back south into ...
Mike Slee
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- 2012
- 2011
- 2010
- 2009
- 2008
- 2007
- 2006
- 2005
- 2004
- 2003
- 2002
- 2001
- 2000
- 1999
- 1998
- 1997
- 1996
- 1995
- 1994
- 1993
- 1992
- 1991
- 1990
- 1989
- 1988
- 1987
- 1986
- 1985
- 1984
- 1983
- 1982
- 1981
- 1980
- 1979
- 1978
- 1977
- 1976
- 1975
- 1974
- 1973
- 1972
- 1971
- 1970
- 1969
- 1968
- 1967
- 1966
- 1965
- 1964
- 1963
- 1962
- 1961
- 1960
- 1959
- 1958
- 1957
- 1956
- 1955
- 1954
- 1953
- 1952
- 1951
- 1950
- 1949
- 1948
- 1947
- 1946
- 1945
- 1944
- 1943
- 1942
- 1941
- 1940
- 1939
- 1938
- 1937
- 1936
- 1935
- 1934
- 1933
- 1932
- 1931
- 1930
- 1929
- 1928
- 1927
- 1926
- 1925
- 1924
- 1923
- 1922
- 1921
- 1920
- 1919
- 1918
- 1917
- 1916
- 1915
- 1914
- 1913
- 1912
- 1911
- 1910
- 1908
- 1902
- 1900
- 1898
- Yugoslavia
- Vietnam
- Venezuela
- USA
- Uruguay
- United Arab Emirates
- Ukraine
- UK
- Uganda
- Turks and Caicos Islands
- Turkey
- Tunisia
- Trinidad and Tobago
- Thailand
- Tanzania
- Taiwan
- Syrian Arab Republic
- Switzerland
- Sweden
- Swaziland
- St. Kitts and Nevis
- Sri Lanka
- Spain
- Soviet Union
- South Korea
- South Africa
- Solomon Islands
- Slovenia
- Slovakia
- Singapore
- Serbia
- Senegal
- Saudi Arabia
- Rwanda
- Russia
- Romania
- Qatar
- Puerto Rico
- Portugal
- Poland
- Philippines
- Peru
- Paraguay
- Panama
- Palestinian Territory
- Pakistan
- Norway
- Northern Ireland
- North Korea
- Nigeria
- Niger
- New Zealand
- Netherlands Antilles
- Netherlands
- Nepal
- Namibia
- Myanmar
- Mozambique
- Morocco
- Montenegro
- Mongolia
- Monaco
- Moldova
- Mexico
- Malta
- Malaysia
- Macedonia
- Luxembourg
- Lithuania
- Liechtenstein
- Libyan Arab Jamahiriya
- Liberia
- Lebanon
- Latvia
- Kuwait
- Kenya
- Kazakhstan
- Jordan
- Japan
- Jamaica
- Italy
- Israel
- Ireland
- Iraq
- Iran
- Indonesia
- India
- Iceland
- Hungary
- Hong Kong
- Honduras
- Guatemala
- Greece
- Ghana
- Germany
- Georgia
- French Polynesia
- France
- Finland
- Fiji
- Faeroe Islands
- Ethiopia
- Estonia
- Equatorial Guinea
- El Salvador
- Egypt
- Ecuador
- East Germany
- Dominican Republic
- Djibouti
- Denmark
- Czechoslovakia
- Czech Republic
- Cyprus
- Cuba
- Croatia
- Cote D'Ivoire
- Costa Rica
- Congo
- Colombia
- China
- Chile
- Canada
- Cameroon
- Cambodia
- Burkina Faso
- Bulgaria
- Brazil
- Botswana
- Bosnia and Herzegovina
- Bolivia
- Bhutan
- Bermuda
- Belgium
- Belarus
- Bangladesh
- Bahamas
- Austria
- Australia
- Aruba
- Armenia
- Argentina
- Antarctica
- Angola
- Algeria
- Albania
- Afghanistan
6.4