Salida de campo por Valladolid capital el 2 de abril de 1953, de la que se anotaron observaciones sobre gasterópodos (Mollusca: Gastropoda), los órdenes Coleoptera e Hymenoptera de insectos (Arthropoda: Hexapoda: Insecta), hallados en estómagos de las siguientes aves: Burhinus oedicnemus (Alcaraván común), Lanius meridionalis (Alcaudón real, llamado L.excubitor por el autor), Milvus migrans (Milano negro) y Milvus milvus (Milano real).
Field trip through the city of Valladolid the 2nd of April of 1953, of which there were noted observations about gastropods (Mollusca: Gastropoda), the Coleoptera and Hymenoptera insects (Arthropoda: Hexapoda: Insecta) orders, found into stomachs of the following birds: Burhinus oedicnemus (Eurasian Thick-Knee), Lanius meridionalis (Great Grey Shrike, refered as L.excubitor by the author), Milvus migrans (Black Kite) and Milvus milvus (Red Kite).
