Reproduction of a Newly-established Population of the Great Cormorant in Northeastern Italy

Great Cormorant (Phalacrocorax carbo) Science Article 2


A study of the breeding biology of the Great Cormorant (Phalacrocorax carbo sinensis) was carried out during 1993-1998 in the Po River Delta, a major wintering area in northeastern Italy. The first of five colonies was founded in 1993, and breeders increased from 69 pairs in 1994 to 285 pairs in 1998. The period of egg-laying lasted from early March to late July, but 65% of all clutches were initiated between late March and the end of April. The average clutch size (

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