Subordinate females in the cooperatively breeding Seychelles warbler obtain direct benefits by joining unrelated groups

In many cooperatively breeding animals, a combination of ecological constraints and benefits of philopatry favours offspring taking a subordinate position on the natal territory instead of dispersing to breed independently. However, in many species individuals disperse to a subordinate position in a non‐natal group (“subordinate between‐group” dispersal), despite losing the kin‐selected and nepotistic benefits of remaining in the natal group. It...