Neighbor Proximity and Overlap
The number of singers at the site increased as the dry season progressed, with peak numbers in June/July (n = 35). The number of nearest neighbors at the time of tracking varied between one and six (x̄ = 2.4 ± 1.6). Neighbors were located adjacent to tens of meters away across treeless farming fields. On three occasions an individual perched within 10 m of our tracked singer in the territory, resulting in antiphonal singing until the intruder left (Fig. 5). Area overlap of neighbors tracked the same year (and three individuals with known site fidelity across years) was low: There were no core SR overlaps and one core NR overlap (x̄.5NRoverlap= 0.1 ± 0.05%, n = 2, Bats 12 and 14, Fig. 4). Overlap was small for 0.95 SR, ranging from 0% to 8.6% (x̄.95SRoverlap = 1.5 ± 2.5%, n = 17, Fig. 4, Supp. Table 1). Neighbor pairs showed some overlap in the 0.95 isopleths of NR, ranging from 0% to 25.6% (x̄.95All = 5.1 ± 7.8%, n = 24 possible overlaps, Fig. 4, Supp. Table 1), with the largest overlap between the female and a neighboring male (Fig. 4, Supp. Table 1), whose NR she frequented. Only one male’s NR overlapped with the NR beyond a nearest neighbor (Bats 1- 2, Supp. Table 1).
DISCUSSION