Alicia Montesinos, Frederic Santoul, Andy J. Green
To compare the diet of chicks of night heron Nycticorax nycticorax and purple heron Ardea Purpurea in the Guadalquivir Marshes. To compare the diet of night heron during breeding and non-breeding seasons. To establish whether the diet of purple heron in Doñana has changed over the past 30 years in response to changes in land use and habitat quality.
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