Category:Birds described in the 20th century
 | This is a container category. Due to its scope, it should contain only subcategories. |
Subcategories
This category has the following 100 subcategories, out of 100 total.
0–9
- Birds described in 1901 (66 P)
- Birds described in 1902 (50 P)
- Birds described in 1903 (54 P)
- Birds described in 1904 (42 P)
- Birds described in 1905 (47 P)
- Birds described in 1906 (57 P)
- Birds described in 1907 (54 P)
- Birds described in 1908 (34 P)
- Birds described in 1909 (29 P)
- Birds described in 1910 (27 P)
- Birds described in 1911 (31 P)
- Birds described in 1912 (55 P)
- Birds described in 1913 (19 P)
- Birds described in 1914 (38 P)
- Birds described in 1915 (20 P)
- Birds described in 1916 (16 P)
- Birds described in 1917 (20 P)
- Birds described in 1918 (14 P)
- Birds described in 1919 (40 P)
- Birds described in 1920 (20 P)
- Birds described in 1921 (22 P)
- Birds described in 1922 (25 P)
- Birds described in 1923 (24 P)
- Birds described in 1924 (26 P)
- Birds described in 1925 (24 P)
- Birds described in 1926 (17 P)
- Birds described in 1927 (19 P)
- Birds described in 1928 (29 P)
- Birds described in 1929 (36 P)
- Birds described in 1930 (24 P)
- Birds described in 1931 (45 P)
- Birds described in 1932 (24 P)
- Birds described in 1933 (23 P)
- Birds described in 1934 (16 P)
- Birds described in 1935 (24 P)
- Birds described in 1936 (10 P)
- Birds described in 1937 (17 P)
- Birds described in 1938 (12 P)
- Birds described in 1939 (25 P)
- Birds described in 1940 (17 P)
- Birds described in 1941 (18 P)
- Birds described in 1942 (5 P)
- Birds described in 1943 (6 P)
- Birds described in 1944 (3 P)
- Birds described in 1945 (7 P)
- Birds described in 1946 (8 P)
- Birds described in 1947 (7 P)
- Birds described in 1948 (5 P)
- Birds described in 1949 (6 P)
- Birds described in 1950 (8 P)
- Birds described in 1951 (8 P)
- Birds described in 1952 (10 P)
- Birds described in 1953 (6 P)
- Birds described in 1954 (5 P)
- Birds described in 1955 (11 P)
- Birds described in 1956 (3 P)
- Birds described in 1957 (9 P)
- Birds described in 1958 (7 P)
- Birds described in 1959 (8 P)
- Birds described in 1960 (12 P)
- Birds described in 1961 (5 P)
- Birds described in 1962 (4 P)
- Birds described in 1963 (5 P)
- Birds described in 1964 (6 P)
- Birds described in 1965 (4 P)
- Birds described in 1966 (6 P)
- Birds described in 1967 (11 P)
- Birds described in 1968 (7 P)
- Birds described in 1969 (5 P)
- Birds described in 1970 (4 P)
- Birds described in 1971 (3 P)
- Birds described in 1972 (9 P)
- Birds described in 1973 (9 P)
- Birds described in 1974 (10 P)
- Birds described in 1975 (7 P)
- Birds described in 1976 (4 P)
- Birds described in 1977 (7 P)
- Birds described in 1978 (1 P)
- Birds described in 1979 (6 P)
- Birds described in 1980 (3 P)
- Birds described in 1981 (5 P)
- Birds described in 1982 (10 P)
- Birds described in 1983 (12 P)
- Birds described in 1984 (6 P)
- Birds described in 1985 (10 P)
- Birds described in 1986 (6 P)
- Birds described in 1987 (6 P)
- Birds described in 1988 (6 P)
- Birds described in 1989 (15 P)
- Birds described in 1990 (9 P)
- Birds described in 1991 (16 P)
- Birds described in 1992 (10 P)
- Birds described in 1993 (5 P)
- Birds described in 1994 (11 P)
- Birds described in 1995 (8 P)
- Birds described in 1996 (7 P)
- Birds described in 1997 (14 P)
- Birds described in 1998 (10 P)
- Birds described in 1999 (13 P)
- Birds described in 2000 (10 P)