Salida de campo por la ciudad de Valladolid el 27 de diciembre de 1953, de la que se anotaron observaciones sobre las siguientes aves: Alondra (probablemente, Alauda arvensis, la Alondra común), Andarríos (llamados "Andarius sp." por el autor, pudiendo ser Acitis sp. o Tringa sp.), Carduelis carduelis (Jilguero), Columba sp. (Paloma), Corvus corone (Corneja negra), Falco tinnunculus (Cernícalo vulgar), Milvus sp. (Milano) y Pterocles alchata (Ganga ibérica).
Field trip through the city of Valladolid the 27th of December of 1953, of which there were noted observations about the following birds: Carduelis carduelis (European Goldfinch), Columba sp. (Pigeon), Corvus corone (Carrion Crow), Falco tinnunculus (Common Kestrel), Milvus sp. (Kite), Pterocles alchata (Pin-tailed Sandgrouse), Sandpiper (refered as "Andarius sp." by the author, that may be Acitis sp. o Tringa sp.) and Skylark (possibly, Alauda arvensis, the Eurasian Skylark).
