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. 2022 Jul 11;13:4001. doi: 10.1038/s41467-022-31621-9

Fig. 1. Study site location and distribution of click train and high note cluster singers’ territories.

Fig. 1

a The Grand Manan Archipelago lies in the southwest Bay of Fundy; Kent Island is the southeasternmost island in the archipelago. b Kent Island and the location of the main study site, which includes the largest contiguous set of territories that were followed continuously (images in a and b modified from Google Maps). c Representative examples of territories within the main area of the study site. In 1997 click trains and high note clusters were equally represented, and in 2004 click trains were sung by the majority of males. Blue = territories of males singing click trains, red = males singing high note clusters, and purple = males singing both features. Territories of older birds are shown with darker shades. Territories of males whose songs were not recorded are shown in white and those with songs that included neither introductory feature are shown in gray. Depending upon conditions, songs can be heard from 50 to 150 m from the singer.