Do you ever listen to birds singing and wonder what they are saying to each other? Bird song is a multi-faceted, complex form of communication. Researchers believe that the primary purpose of bird song is to attract mates. Male birds that offer robust, consistent notes and have an extensive song repertoire are more likely to appeal to mates, because the quality of bird song is indicative of health.
Song complexity has been linked to male territorial defense, with more complex songs being perceived as a greater threat. Another fun fact about bird song is that many bird species engage in duet calls. In some cases, the duets are so precisely timed that it sounds like one call.
This infographic explores the songs and calls made by 50 bird species, offering a fascinating glimpse into the elaborate world of bird communication. For an interactive version of the infographic, visit the original source at AAA State of Play.