Feeding interactions between juvenile and adult Flightless Cormorants.
We report observations on chick feedings by adult Flightless Cormorants Phalacrocorax harrisi, indicating that, contrary to the literature, the sequence of interaction is similar to that of other Pelecaniformes. This species is among the rarest of seabirds, breeding in scattered colonies along the coastlines of Isla Fernandina and Isla Isabela, Galápagos, Ecuador (Harris 1974; Rosenberg et al. 1990). It is listed as vulnerable on the IUCN Red List of Threatened Species (IUCN 2013), and is the only flightless species of its 27-member genus (Livezey 1992, Johnsgard 1993). Flightless Cormorants exhibit more than twice the mass of other cormorants (Wilson 2008). Despite their large size and locally conspicuous presence, they were overlooked by Darwin (1845) during his celebrated visit to the Galápagos Islands in 1835. The first published descriptions of Flightless Cormorants were provided over a half century later by Rothschild (1898) and Rothschild & Hartert (1899, 1902).
English
2077
Flightless Cormorants. Cormoranes no voladores. Phalacrocorax