Bird populations -- Estimates -- Congresses. : Estimating numbers of terrestrial birds : proceedings of an international symposium held at Asilomar, California, October 26-31, 1980 / editors, C. John Ralph and J. Michael Scott ; sponsors, California Natural Resources Federation ... [and others]
Bird populations -- Louisiana -- Kisatchie National Forest. : Neotropical migratory birds of the Kisatchie National Forest, Louisiana : abstracts for selected species and management considerations / Robert X. Barry, Bernard R. Parresol and Margaret S. Devall
Bird populations -- Measurement -- Congresses. : Estimating numbers of terrestrial birds : proceedings of an international symposium held at Asilomar, California, October 26-31, 1980 / editors, C. John Ralph and J. Michael Scott ; sponsors, California Natural Resources Federation ... [and others]
Bird populations -- New Zealand -- Geographical distribution -- Maps. : Bird distribution in New Zealand : a provisional atlas 1969-1976 / P.C. Bull, P.D. Gaze, C.J.R. Robertson, the Atlas Committee for a joint project by Ecology Division, D.S.I.R., N.Z. Wildlife Service, the Ornithological Society of N.Z
1978
1
Bird populations -- New Zealand -- Maps. : Bird distribution in New Zealand : a provisional atlas 1969-1976 / P.C. Bull, P.D. Gaze, C.J.R. Robertson, the Atlas Committee for a joint project by Ecology Division, D.S.I.R., N.Z. Wildlife Service, the Ornithological Society of N.Z
Bird populations -- Research -- Australia -- Victoria. : Effects of repeated low-intensity fire on bird abundance in a mixed eucalypt foothill forest in south-eastern Australia / Richard H. Loyn, Ross B. Cunningham and Christine Donnelly
Here are entered works on the calls or songs produced by birds. Musical compositions having birds as their subject are entered under Birds--Songs and music. Works on the process of sound production by birds are entered under Birds--Vocalization
Here are entered works on the calls or songs produced by birds. Musical compositions having birds as their subject are entered under Birds--Songs and music. Works on the process of sound production by birds are entered under Birds--Vocalization