This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Birds are not only beautiful to look at and listen to; they also play important roles in nature. They eat pests and disperse seeds.
They are generally considered indicators of a healthy environment. When birds thrive, soil and water quality often benefit as well. A new study published in the journal Landscape Ecology shows that growing a variety of crops in small field patches creates better habitats for birds.
The study was led by the Leibniz Centre for Agricultural Landscape Research (ZALF). Over three years, the scientists investigated how growing a variety of crops in small patches within a field affects bird populations. Birds visited the experimental field about 70% more often than neighboring, conventionally managed large reference fields.
The result is clear: Where fewer pesticides are used and different crops grow close to one another, birds feel more at home and are more abundant. The paper is published in the journal Landscape Ecology. The analysis found that birds were not only encountered more often in the diversely managed fields but also behaved differently.
They formed small groups and preferred areas with lower pesticide use and greater plant diversity. The skylark in particular—a bird that nests in open areas and is often considered an emblem of the agricultural landscape—benefited from these conditions. It was found significantly more often in areas with less chemical pesticide use, adjacent flower strips and more wild plants.
"Our data clearly show that it's not just about what is cropped, but also how the land is designed and managed," explains Jenny Kröcher, a researcher on the ZALF team. "If we make the fields smaller, combine different crops, and—wherever it is possible—reduce chemical crop protection or replace it with non-chemical methods, we create habitats that provide birds with food and shelter. It's like a buffet and a safety net all in one." Other research groups have reached similar conclusions: A diverse landscape is more resilient and richer in species.
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