Upland Goose (Chloephaga picta) Science Article 1 abstract In many bird species, achromatic plumage patch size can serve as a male status signal, but the use of variations in the achromatic colours themselves as a quality signal has only recently come into focus. In our study, we sought to determine whether achromatic plumage reflects individual […]
Olfactory sensitivity of the Tturkey vulture (Cathartes aura) to three carrion-associated odorants
Turkey Vulture (Cathartes aura) Science Article 2 abstract The Turkey Vulture (Cathartes aura) is generally thought to rely on olfactory cues to locate carrion. Because vertically rising odorants are dispersed rapidly by wind turbulence, we predict that Turkey Vultures should be highly sensitive to these chemicals to detect them at foraging altitudes. STEVEN A. SMITH […]
Observations on Migratory Turkey Vultures and Lesser Yellow-headed Vultures in Northern Colombia
Turkey Vulture (Cathartes aura) Science Article 1 abstract Turkey Vultures (Cathartes aura) breed from southern Canada to Tierra del Fuego, while Lesser Yellowheaded Vultures (Cathartes burrovianus) occur from M xico through Central America to northern Argentina and Uruguay (Meyer de Schauensee 1966).It has long been known that Turkey Vultures breeding in the northern parts of […]
Agonistic Behavior In The Swallow-Tailed Kite
Swallow-tailed Kite (Elanoides forficatus) Science Article 4 abstract The Swallow-tailed Kite (Elanoides forficatus) is an uncommon to fairly common visitorto wetland habitat of central Florida (Stevenson and Anderson 1994). This species iseasily recognized by its deeply forked tail and habit of soaring above the treetops (Kaleet al. 1990) W. BOYD BLIHOVDE, Florida Field Naturalist 30(2):41, […]
Roosting habits of the Swallow-tailed Kite.
Swallow-tailed Kite (Elanoides forficatus) Science Article 5 abstract Surinam the Swallow-tailed Kite (Elanoides forficatus) is one of the commonest raptors. Present all through the year and sociable at all seasons, it usually occurs in flocks of up to 30 individuals. My records show no evidence that its numbers are augmented at any particular season by […]
Siblicide In Swallow-Tailed Kites
Swallow-tailed Kite (Elanoides forficatus) Science Article 1 abstract We studied the reproductive behavior of Swallow-tailed Kites (Elanoides forficatus) in northern Guatemala. Modal clutch size was two (range l-2), but no nests succeeded in fledging more than one young. RICHARD I? GERHARDT, Wilson Bull., 109(l), 1997, pp. 112-120 Download article download full text (pdf)
Food Deliveries At Swallow-Tailed Kite Nests In Southern Florida
Swallow-tailed Kite (Elanoides forficatus) Science Article 3 abstract We studied the diets of nesting Swallowtailed Kites (Elanoides forficatus) at eight nests in 1988
Pre-Nesting Behavior Of The Swallow-Tailed Kite (Elanoides Forficatus), Including Interference By An Unmated Male With A Breeding Pair
Swallow-tailed Kite (Elanoides forficatus) Science Article 2 abstract Snyder( 1974) has described the breeding biology of the Swallow-tailed Kite (Elanoides forficatus). My observations of their pre-nesting behavior, made while staying at the Archbold Biological Station at Lake Placid, Florida, confirm his on copulations,courtship feeding, and nest-building Lawrence Kilham, Raptor Research 14(1):29-31 Download article download full […]
Colony Visitation Behavior And Breeding Ages Of Sooty Terns (Sterna Fuscata)
Sooty Tern (Sterna fuscata) Science Article 7 abstract The apparent regulation of population size in seabirds has been a topic of recent research by several ornithologists (e.g. Ashmole, 1963b; Harris, 1969a, b, c; Nelson, 1965, 1966, 1969a, b; Rowan 1965; and Lack, 1968). These authors theorize that major limiting factors are either availability of food […]
New Zealand-banded Sooty Tern (Sterna fuscata) breeds in the Seychelles
Sooty Tern (Sterna fuscata) Science Article 3 abstract Over 14 600 Sooty Terns (Sterna fuscata serrata) have been banded underthe New Zealand National Banding Scheme. The great majority of themwas banded between 1961 and 1969 by Civil Aviation staff stationed on RaoulIsland in the Kermadec group (29O 15’S, 177O 55′ W) and during theOrnithological Society […]