title: Birth order, individual sex and sex of competitors determine the outcome of conflict among siblings over parental care.
authors.affiliation: Dipartimento di Biologia, Università degli Studi di Milano, via Celoria 26, I-20133 Milan, Italy. andrea.bonisoli@unimi.it
authors.forename: Andrea
authors.initials: A
authors.lastname: Bonisoli-Alquati
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Boncoraglio
authors.forename: Manuela
authors.initials: M
authors.lastname: Caprioli
authors.forename: Nicola
authors.initials: N
authors.lastname: Saino