Biological Faculty, Moscow State University, 119234, Moscow, Russia.
Nachinanie Ecopark, Solnechnogorsk, Moscow oblast, Russia.
Dokl Biol Sci. 2021 Mar;497(1):73-75. doi: 10.1134/S0012496621020034. Epub 2021 May 4.
Birdsong overlapping may either indicate communicative interaction between birds or be a simple coincidence. We developed a program that allowed us to mathematically modulate the independent singing of birds with a given level of song rate. This permitted us to statistically evaluate whether song overlapping is a random coincidence or real acoustic interactions between birds. Analysis of automatic recording (Song Meter SM4) of singing detected the cases of reliable acoustic interactions between both conspecific and heterospecific individuals. They account for 6% of the total singing time. The most numerous and actively singing chaffinches (in the case of singing of several individuals) suppress the singing of other species. The singing of a single chaffinch, on the other hand, can provoke the singing of other species, involving previously silent neighbors in song duels. It is possible that it is the acoustic interactions that are responsible for maintaining the structure of the population at the end of the breeding season.
鸟鸣重叠可能表明鸟类之间存在交流互动，也可能只是简单的巧合。我们开发了一个程序，可以用给定的鸣唱率水平对鸟鸣进行数学调制。这使我们能够从统计学上评估鸟鸣重叠是随机巧合还是鸟类之间真实的声学相互作用。对自动记录（Song Meter SM4）的歌唱分析检测到了同种和异种个体之间可靠的声学相互作用的情况。它们占总歌唱时间的 6%。数量最多、歌唱最活跃的朱雀（在有多个个体歌唱的情况下）会抑制其他物种的歌唱。另一方面，一只朱雀的歌唱可以引发其他物种的歌唱，使以前沉默的邻居参与到歌声决斗中。在繁殖季节结束时，可能正是这些声学相互作用维持了种群的结构。
