While ornithologists, citizen scientists, and birders alike are familiar with this large repertoire, some of the environmental conditions that contribute to these sounds are less understood. To help, a team from the University of Wisconsin-Madison recently used over 100,000 audio recordings from around the world to study some of the factors that influence bird sounds. They found some patterns of how habitat, latitude, beak size, body size, and the landscapes can influence birds to create certain noises and at what frequencies. The findings are detailed in a study recently published in the journal Proceedings of the Royal Society B.
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