The negative impact of conventional farming on avian biodiversity has been increasingly documented. However, the potential effects of different farming practices on bird populations' health remain unclear. We aimed to investigate whether different farming practices (organic, integrated production, conventional/intensive) have differential effects on the body mass - as a proxy for body condition - and biomarkers of oxidative stress in house sparrows (Passer domesticus), a model species strongly associated with human activities and still abundant in Switzerland. We captured a total of 681 birds in 19 organic farms, 20 integrated-production farms (labelled “IP-Suisse”) and 18 conventional farms, and measured bird body mass and tarsus length, as well as levels of malondialdehydes (MDA, a marker of oxidative damage to lipids), superoxide dismutase (SOD, a first-line antioxidant enzyme) activity, and the ratio of oxidized over reduced glutathione (GSSG/GSH, a marker of cellular oxidative stress) in blood and sperm as biomarkers of the systemic oxidative stress endured by birds. Our findings show that house sparrows living in integrated and organic farms were 2.39 % and 4.33 % heavier than birds living in conventional farms, but we did not find any difference in tarsus length, suggesting that birds were of similar size. In addition, we did not find any difference in oxidative stress markers across farming practices. Our results highlight the potential benefits of sustainable farming practices, such as organic and integrated farming, for bird populations and emphasize the need for mitigating the negative impact of agricultural intensification on biodiversity through practices that may enhance the birds’ health and thus lead to positive population dynamics.

传统农业对鸟类生物多样性的负面影响已越来越多地被记录。然而，不同耕作方式对鸟类健康的潜在影响仍不清楚。我们的目的是调查不同的农业实践（有机、综合生产、传统/集约化）是否对作为身体状况指标的体重和氧化应激生物标志物（模式物种麻雀）产生不同的影响。与人类活动有关，在瑞士仍然丰富。我们在 19 个有机农场、20 个综合生产农场（标记为“IP-Suisse”）和 18 个传统农场中总共捕获了 681 只家禽，并测量了家禽的体重和跗节长度以及丙二醛（MDA，一种标记物）的水平。脂质氧化损伤的程度）、超氧化物歧化酶（SOD，一种一线抗氧化酶）活性以及血液和精子中氧化型谷胱甘肽与还原型谷胱甘肽（GSSG/GSH，细胞氧化应激的标志物）的比率作为全身系统的生物标志物鸟类承受的氧化应激。我们的研究结果表明，生活在综合农场和有机农场的麻雀比生活在传统农场的鸟类重 2.39% 和 4.33%，但我们没有发现跗骨长度有任何差异，这表明鸟类的体型相似。此外，我们没有发现不同农业实践中氧化应激标记有任何差异。我们的研究结果强调了可持续农业实践（例如有机和综合农业）对鸟类种群的潜在好处，并强调需要通过可增强鸟类健康的实践来减轻农业集约化对生物多样性的负面影响，从而带来积极的种群数量动力学。