Obervational Data Set

Observational data of the behaviors (aggression and chases) of breeding pairs in their natural habitat to assess sex differences in their ability to adjust aggressive responses toward intruders. This also allowed us to compare the responses of breeding pairs with naturally occurring solitary parents (i.e. individuals who are looking after the brood on their own) to determine whether the latter can compensate for the loss of their mate, with regard to the quantity (aggression_no, chase_no and aggression) and quality (aggression_initiation, chase_initiation and chase_distance) of the care they provide.