Yellow-legged Gull (Larus cachinnans) Science Article 3 abstract This note reports a case of predation by an adult female Marsh Harrier Circus aeruginosus onthree nests of Yellow-legged Gulls Larus michahellis at the Ebro Delta. The predation wasobserved on 4 April 2002 on one of the dykes that separate the saltpan-heaters of La Trinitat(Punta de la […]
Courtship feeding between Yellow-legged Gull Larus cachinnans and Herring Gull L. argentatus in the Western Mediterranean
Yellow-legged Gull (Larus cachinnans) Science Article 1 abstract Several species of large white-headed gulls, genus Larus, often hybridize freely where they occur sympatrically (Ingolfsson 1987, Pierotti 1987, Spear 1987, Pierotti & Annett 1993). In the Ebro Delta (Ebro Delta National Park, 40
Notes on Icterus nigrogularis and I. chrysocephalus in Surinam
Yellow-hooded Blackbird (Chrysomus icterocephalus) Science Article 1 abstract In his interesting and important paper,
Feeding associations between capybaras Hydrochoerus hydrochaeris (Linnaeus) (Mammalia, Hydrochaeridae) and birds in the Lami Biological Reserve, Porto Alegre, Rio Grande do Sul, Brazil.
Yellow-headed Caracara (Milvago chimachima) Science Article 2 abstract Feeding associations between capybaras Hydrochoerus hydrochaeris (Linnaeus, 1766) and some bird species were registered in the Lami Biological Reserve, southern Brazil, through observations in a set of transects established in the five major vegetation types of the study area: shrubby and herbaceous swamps, wet grasslands, sandy grasslands […]
Nesting observations of the Yellow-Headed caracara in the cerrado region of Brazil
Yellow-headed Caracara (Milvago chimachima) Science Article 1 abstract Although the Yellow-headed Caracara (Milvago chimachima) is widely distributed, common birds in South America, little is known concerning their breeding biology. Bierregaard (in del Hoyo et al. 1994) conducted an excellent review of known data, but details are based on fragmented observations, are incomplete, and often inferential […]
Yellow-headed Blackbird account
Yellow-headed Blackbird (Xanthocephalus xanthocephalus) Science Article 4 abstract Currently considered a Bird Species of Special Concern (breeding), priority 3. Not included on previous lists (Remsen 1978, CDFG 1992). Studies of Western Birds 1:444-450, 2008, Shuford, W. D., and Gardali, T Download article download full text (pdf)
Nestling Diets of Red-Winged and Yellow-Headed Blackbirds on Playa Lakes of West Texas
Yellow-headed Blackbird (Xanthocephalus xanthocephalus) Science Article 3 abstract Red-winged blackbirds (Agelaius phoeniceus) and yellow-headed blackbirds (Xanthocephalus xanthocephalus) are abundant breeding birds on the playa lakes of the Panhandle of Texas. Earlier studies have described the foods of nestling icterids in areas supporting wetlands undisturbed by agriculture (Willson 1966, Robertson 1973, Orians and Hom 1969), but […]
Red-winged and Yellow-headed Blackbird Nesting Habitat in a Wisconsin Marsh
Yellow-headed Blackbird (Xanthocephalus xanthocephalus) Science Article 1 abstract Competitive interactions between Red-winged (Agelaius phoeniceus) and Yellow-headedblackbirds (Xanthocephalus xathocephalus) have been reported by a number of workers(e.g., Orians and Willson 1964, Willson 1966, Miller 1968). Most studies concerned withboth species occurring together have been conductedin western regions of North America;however, see Weller and Spatcher (1965), Burt […]
American Coot kills Yellow-headed Blackbird nestlings
Yellow-headed Blackbird (Xanthocephalus xanthocephalus) Science Article 2 abstract I know of only one witnessed predation event by an American Coot (Fulica americana) on a vertebrate-a nestling Redwinged Blackbirds. PETER L. HURD, Wilson Bull., 104(3), 1992, pp. 552-553 Download article download full text (pdf)
Habitat selection by yellowhammers Emberiza citrinella on lowland farmland at two spatial scales: implications for conservation management
Yellowhammer (Emberiza citrinella) Science Article 5 abstract Yellowhammer Emberiza citrinella populations have declined rapidly in the UK over recent decades, and a clear understanding of their habitat requirements is important to help inform conservation schemes. We aimed to disentangle and rank the effects of winter versus breeding season habitat characteristics. 2. We used information theoretic […]