Vol. 14 No. 4 (1997)

Inter- and intra-specific kleptoparasitism at a mixed-species colony of Royal (Sterna maxima) and Cayenne terns (S. eurygnatha)

Abstract

Within seabirds, terns are frequently affected by foodrobbing. We document the occurrence of kleptoparasitism at a mixed-species colony of Royal (Sterna maxima) and Cayenne (S. eurygnatha) terns at Punta León, Chubut. In two seasons we observed both inter- and intra-specific food robbing by adult terns. The amount of food lost to pirates was relatively low, only 2% of prey brought back by the terns (n = 1127). Intraspecific food robbing was higher than interspecific kleptoparasitism in the Royal Tern and similar in the Cayenne Tern. The percentage of food lost to pirates in the colony (2.1%,n = 921) was similar than in groups of tern chicks at the beach (2.4%, n = 206). Kleptoparasitism between terns at Punta León appears to be of little importance with respect to its effects on both tern populations.

References

How to cite

Flavio Quintana, Pablo Yorio (1997). Inter- and intra-specific kleptoparasitism at a mixed-species colony of Royal (Sterna maxima) and Cayenne terns (S. eurygnatha). El Hornero, Vol. 14 No. 4 (1997), 256-259. https://doi.org/10.56178/eh.v14i4.975

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