Svagelj WS, Trivellini MM y Quintana F. 2012. Parental investment theory and nest defence by Imperial Shags: effects of offspring number, offspring age, laying date and parent sex. Ethology 118: 251-259. Leptomar 2 años ago Parental-Investment-Theory-and-Nest-Defence-by-Imperial-Shags-Effects-of-Offspring-Number-Offspring-Age-Laying-Date-and-Parent-SexDescarga