Ecuadorhttp://hdl.handle.net/1834/14062024-03-27T05:06:49Z2024-03-27T05:06:49ZThe history of Prothonotary Warbler in the Galapagos IslandsJiménez-Uzcátegui, Gustavohttp://hdl.handle.net/1834/363642021-07-15T02:07:42Z2016-10-01T00:00:00ZThe history of Prothonotary Warbler in the Galapagos Islands
Jiménez-Uzcátegui, Gustavo
The first and second records of Prothonotary Warbler Protonotaria citrea in Galapagos are clarified.
2016-10-01T00:00:00ZBack page of no. 68, 2016http://hdl.handle.net/1834/363652021-07-15T02:07:54Z2016-10-01T00:00:00ZBack page of no. 68, 2016
Instructions for Authors. Back cover with map.
2016-10-01T00:00:00ZGizzard contents of the Smooth-billed Ani Crotophaga ani in Santa Cruz, Galapagos Islands, EcuadorConnett, LillianGuézou, AnneHerrera, Henri W.Carrión, VictorParker, Patricia G.Deem, Sharon L.http://hdl.handle.net/1834/363632021-07-15T02:07:36Z2016-10-01T00:00:00ZGizzard contents of the Smooth-billed Ani Crotophaga ani in Santa Cruz, Galapagos Islands, Ecuador
Connett, Lillian; Guézou, Anne; Herrera, Henri W.; Carrión, Victor; Parker, Patricia G.; Deem, Sharon L.
The Smooth-billed Ani Crotophaga ani was introduced to the Galapagos archipelago in the 1960s, since when its population has grown significantly. We studied the dietary items in the gizzards of 56 anis sampled on the island of Santa Cruz. We confirmed that the diet of C. ani consists primarily of invertebrates and plant material, including native species and non-native invasives. The second most abundant seed in the anis’ diet was that of the highly invasive plant, Rubus niveus. Our findings suggest that C. ani poses a threat to the Galapagos ecosystem by dispersing seeds of non-native plants and by competing with other insectivorous species on the islands. Furthermore, the discovery of a Darwin’s Finch nestling in the gizzard of one C. ani establishes direct predation by this species on native birds.
2016-10-01T00:00:00ZThe biology of an isolated population of the American Flamingo Phoenicopterus ruber in the Galapagos IslandsTindle, Robert W.Tupiza, ArnaldoBlomberg, Simon P.Tindle, L. Elizabethhttp://hdl.handle.net/1834/363602021-07-15T02:07:02Z2016-10-01T00:00:00ZThe biology of an isolated population of the American Flamingo Phoenicopterus ruber in the Galapagos Islands
Tindle, Robert W.; Tupiza, Arnaldo; Blomberg, Simon P.; Tindle, L. Elizabeth
A genetically and morphologically divergent population of c. 500 American Flamingos, isolated from the parental Caribbean stock of Phoenicopterus ruber, occurs in the Galapagos archipelago. Based primarily on data from a 3-year study, we provide the first description of the feeding and breeding biology of this population. Galapagos provides a suitable habitat comprising lagoons on a number of islands, among which the flamingos travel in response to food and nest site availability. We identify putative food items. The occurrence and quantity of some food species was associated with the chlorosity of lagoon water, as was the distribution of flamingos. The flamingos bred opportunistically at five lagoons on four islands, sometimes simultaneously on more than one island. Group display usually involved = 20 birds, and colonies contained as few as three nests. Laying occurred during nine months of the year, mainly August–January, coinciding with the coastal drier season and low lagoon water levels. On average c.30% of all adults incubated clutches each year, producing 0.37 fledglings per clutch. Recruitment is probably sufficient to sustain the population, which has been stable over at least c. 45 years, and is probably limited by suitable habitat. Moult to flightlessness was recorded among adults. We review potential dangers to this unique population and suggest conservation measures.
2016-10-01T00:00:00Z