@article {560, title = {Breeding ecology of the Clay-coloured Robin Turdus grayi in lowland Panama}, journal = {Ibis}, volume = {125}, year = {1983}, note = {Turdidae}, pages = {287-304}, keywords = {yesnest}, author = {Dyrcz, A.} } @article {561, title = {Breeding biology of the Mangrove Swallow Tachycineta albilinea and the Grey-breasted Martin Progne chalybea at Barro Colorado Island, Panama}, journal = {Ibis}, volume = {126}, year = {1984}, note = {Hirundinidae}, pages = {59-66}, keywords = {yesnest}, author = {Dyrcz, A.} }