@article{journal,
author = {Blanco, J. C. and Gonz{\'a}lez, J. L. and Hiraldo, F.},
title = {On the trophic and spatial relationships between wintering Red Kites (Milvus milvus) and Marsh Harriers (Circus aeruginosus) in the Guadalquivir Marshes},
year = {1990},
volume = {14},
pages = {161--166},
journal = {Miscel·l{\`a}nia Zool{\`o}gica},
keywords = {Competici{\'o}n Interespec{\'i}fica, Milvus tnilvus, Circus aeruginosus, Marismas del Guadalquivir, Espa{\~n}a}
}