Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleCLUTCH SIZE AND LAYING DATE IN THE KESTREL FALCO TINNUNCULUS: EFFECT OF SUPPLEMENTARY FOOD.AuthorsDIJKSTRA, C.; VUURSTEEN, L.; DAAN, S.; MASMAN, D.PublicationIbis, 1982, Vol 124, Issue 2, p210ISSN0019-1019Publication typeArticleDOI10.1111/j.1474-919X.1982.tb03766.x