Table 1 Posterior distribution of divergence times for some selected nodes.

O. sunia/O. insularis

1.1 (0.3–2.0)

Otus pauliani/O. moheliensis *

0.7 (0.5–0.9)

Otus Indian Ocean radiation

2.5 (1.2–4.0)

Otus Indian Ocean colonization

3.6 (1.8–6.0)

Pemba island colonization

1.7 (0.7–3.3)

Clade 1/Clade 2

9.3 (4.7–15.1)

O. ireneae/remaining Otus

11.7 (6.0–19.0)

Asioninae/sister-group *

17.3 (16.7–19.3)