@article{journal, author = {Garc{\'i}a-Petit, J. and Mart{\'i}, M. E. and Tomas, X.}, title = {Colonitzaci{\'o} de la ciutat de Barcelona pel Gavia Argentat (Larus cachinnans)}, year = {1986}, volume = {10}, pages = {401--403}, journal = {Miscel·l{\`a}nia Zool{\`o}gica}, keywords = {Yellow Legged, Larus cachinnans, Barcelona, Urban breeding} }