THE EFFECTS OF BROOD SIZE ON GROWTH OF SOUTH AFRICAN CLIFF SWALLOW HIRUNDO SPILODERA CHICKS

摘要: Summary Earle, R.A. & Underhill, L.G. 1991. The effects of brood size on growth South African Cliff Swallow Hirundospilodera chicks. Ostrich 62: 13–22. We aimed to determine if rates Hirundo spilodera chicks varied between broods different sizes, with a view understanding conspecific arasitism. Reression analyses and logistic curves were used model body-mass wing-length at Afferent ages interpret observed differences in the experimentally established sizes. Only regression showed meaningful swallows unable raise four or five successfully, we conclude that most frequently clutch sizes (two three) are productive, there is no apparent advantage parasitism for parasite.