Competition over guarding in the Arabian babbler (Turdoides squamiceps), a cooperative breeder [version 1; referees: 1 approved, 2 approved with reservations]
Observations on 12 groups comprised of two adult males and one adult female (some included one or two fledglings), tame, individually marked, Arabian babblers (Turdoides squamiceps) in the rift valley in Israel revealed that the babblers compete to guard.The pattern of guarding and the way by which one sentinel replaces another reflect the dominanc