One of the emerging phenomena of urbanization is urban noise, which can affect birds in different ways. Urban noise has been shown to influence hummingbirds’ territorial behavior, vocalizations, and nesting, but its effect on their foraging behavior has not yet been tested. In this work we evaluated the effect of urban noise on the foraging activity of an urban hummingbird community located in central Mexico. We established 3 sampling sites where we tested 4 treatments of artificial urban noise (Tr0 without artificial noise, Tr1 without artificial noise but with the presence of a silenced speaker, Tr2 with artificial noise at 70 dB produced by a speaker, and Tr3 with artificial noise at 90 dB produced by a speaker). We repeated each treatment 15 times during 3 weeks at different hours of the day. To analyze the data, we used generalized linear models aided with the visual inspection of graphs. We observed a total of 564 visits by 4 different hummingbird species: White-eared Hummingbird (Basilinna leucotis), Broad-billed Hummingbird (Cynanthus latirostris), Blue-throated Hummingbird (Lampornis clemenciae), and Magnificent Hummingbird (Eugenes fulgens). The treatments with artificial noise above 70 dB (Tr2 and Tr3) were visited significantly less frequently by hummingbirds than the treatment without artificial noise (Tr0); we did not find effects of date, environmental noise, site, nor treatment–site interaction. The effects of noise were generally consistent, although there were some aspects that varied among species and between sexes. Our results indicate that urban noise above 70 dB has a negative effect on the foraging activity of the individuals belonging to an urban hummingbird community, and that such effect can be detected at the species and sex levels. Received 12 April 2023. Accepted 11 January 2024.

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