Volume 30(1) - June 1983

Articles

3. A comparative study of the basic reproductive parameters of Passer hispaniolensis and Passer domesticus in central-western Spain.. ALONSO, J. C. (pages 3-21).
23. Bird wintering in the Gibraltar area.. ARROYO, B. & TELLERÍA, J. L. (pages 23-31).
33. A comparative study of the diet of Acrocephalus arundinaceus and A. scirpaceus in the Zóñar pond (southern Spain).. CÁRDENAS, A. M., TORRES, J. A. & BACH, C. (pages 33-44).
45. A comparative analysis of five techniques for recording the use of space by forest birds.. CARRASCAL, L. M. (pages 45-55).
57. Data on the diet of the Barn Owl (Tyto alba), the Long-eared Owl (Asio otus) and the Little Owl (Athene noctua) in a locality of Castilla La Vieja (Spain).. DELIBES, M., BRUNET-LECOMTE, P. & MÁÑEZ, M. (pages 57-63).
65. The importance of holly (Ilex aquifolium L.) in the ecology of a winter community of passerines in the western Cantabrian Mountains.. GUITIÁN, J. (pages 65-76).
77. Significance of ants in the diet of insectivorous birds in southern Spanish Mediterranean habitats.. HERRERA, C. M. (pages 77-81).
83. Structure and composition of wintering bird communities in semiarid areas of Lanzarote and Fuerteventura (Canary Islands, Spain).. SUÁREZ, F. (pages 83-91).
95. Data on the 1981 and 1982 winter wader counts in Spain.. ALBERTO, L. J. & PURROY, F. J. (pages 95-100).
100. The results of the winter waterfowl counts in Spain (January 1983).. ENA, V. & PURROY, F. J. (pages 100-105).
105. New heronries at the Ebro Delta, Spain.. MARTÍNEZ-VILALTA, A. & MARTÍNEZ-VILALTA, I. (pages 105-108).
109. A variation in the general pattern of the sternum of the Passeriforms.. MORENO, E. (pages 109-113).

Sections

115. Ornithological news.. DE JUANA, E. (Rec.). (pages 115-124).