Adaptive modifications for tree-trunk foraging in birds.

Form and function in birds /
Published: (1979)

The web of adaptation : bird studies in the American tropics /
by: Snow, David (David William)
Published: (1976)

Form and function in birds /
Published: (1979)

Physiology of cold adaptation in birds /
Published: (1989)

Geographic variation in social behavior and in adaptations to competition among Andean birds /
by: Moynihan, M.
Published: (1979)

The relationships of the Pedionomidae (Aves : Charadriiformes) /
by: Olson, Storrs L.
Published: (1981)

Relationships of the cathartid vultures /
by: Ligon, James David, 1939-
Published: (1967)

Birds : their structure and function /
by: King, A. S. (Anthony Stuart)
Published: (1984)

Ecological adaptations for breeding in birds /
by: Lack, David, 1910-1973
Published: (1968)

Anatomy of head and neck in the Huia (Heteralocha acutirostris) with comparative notes on other Callaeidae /
by: Burton, Philip John Kennedy
Published: (1974)

Physiology of cold adaptation in birds /
Published: (1989)

Days with birds : studies of habits of some East African species /
by: Van Someren, Victor Gurnet Logan
Published: (1956)

The structure and classification of birds /
by: Beddard, Frank E. (Frank Evers), 1858-1925
Published: (1898)

Functional anatomy of birds /
by: Worden, Alastair N.
Published: (1956)

Modifications and adaptations to function in the feathers of Circus hudsonius.
by: Chandler, Asa Crawford, 1891-1958
Published: (1914)

Sturkie's avian physiology /
Published: (2000)

Birds of the Southern California deserts /
by: Willett, George, 1879-1945
Published: (1951)

[Birds.
by: Uchida, Seinosuka
Published: (1949)

The birds of Chile /
by: Hellmayr, C. E. (Carl Eduard)
Published: (1932)

Birds from the lowlands of southern New Guinea (Merauke and Koembe) /
by: Mees, G. F.
Published: (1982)

The birds of El Salvador /
by: Dickey, Donald R. (Donald Ryder), 1887-1932
Published: (1938)

Birds of northeastern Peru.
by: Traylor, Melvin A. (Melvin Alvah), 1915-2008
Published: (1958)

Notes on Paraguayan birds /
by: Storer, Robert W., 1914-
Published: (1989)

Adaptive strategies and population ecology of northern grouse /
Published: (1988)

Biology and comparative physiology of birds.
Published: (1961)

Avian physiology : the proceedings of a symposium "Advances in Avian Physiology" held at the Zoological Society of London on 22 and 23 November 1973 /
Published: (1975)

Temperature regulation and water requirements of the brown and Abert towhees, Pipilo fuscus and Pipilo aberti.
by: Dawson, William R.
Published: (1954)

The origin and evolution of birds /
by: Feduccia, Alan
Published: (1999)

Social feeding behavior of birds.
by: Rand, Austin Loomer, 1905-1982
Published: (1954)

An analysis of the distribution of the birds of California.
by: Miller, Alden H. (Alden Holmes), 1906-1965
Published: (1951)

The avian brain /
by: Pearson, Ronald George
Published: (1972)

Birds from Liberia : with a discussion of barriers between Upper and Lower Guinea subspecies.
by: Rand, Austin Loomer, 1905-1982
Published: (1951)

Breeding-bird populations in jack pine and mixed jack pine/deciduous stands in central Ontario /
by: James, Ross D., 1943-
Published: (1995)

Birds : their structure and function /
by: King, A. S. (Anthony Stuart)
Published: (1984)

Birds in relation to a grasshopper outbreak in California.
by: Bryant, H. C. (Harold Child), 1886-1968
Published: (1912)

Descriptions of five new Indo-Chinese birds /
by: Bangs, Outram, 1862-1932
Published: (1930)