Category: North America

Predator avoidance behaviour of a solitary Willet attacked by a Peregrine Falcon

Willet (Catoptrophorus semipalmatus) Science Article 2 abstract During the non-breeding season, Willets Catoptrophorus semipalmatus use a variety of tactics to avoid predators and have been reported to take flight, submerge themselves inwater, and hide in or near marsh vegetation JOSEPH B. BUCHANAN, Bulletin 104 August 2004 Download article download full text (pdf)

Social Organization In A Nesting Population Of Eastern Willets (Catoptrophorus Semipalmatus)

Willet (Catoptrophorus semipalmatus) Science Article 1 abstract The breeding ecology of eastern Willets (Catoptrophorus semipalmatus) was studied over a 3-yr period in a salt marsh on the Atlantic coast of Virginia. During the study,171 adults were color-marked MARSHALL A. HOWE, The Auk 99: 88-102. January 1982 Download article download full text (pdf)

Yellow Warbler nests: building materials and cowbirdparasitism

Yellow Warbler (Dendroica petechia) Science Article 4 abstract Nests are traditionally defined as receptacles in which to house eggs and chicks; however, for the Yellow Warbler (Dendroica petechia), nests may have additional biological significance, especially with respect to Brown-headed Cowbird (Molothrus ater) parasitism. Michelle Mico, UFS (Delta Marsh) Annual Report, Vol. 30, 1995 Download article […]

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 […]

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 […]

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)

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 […]

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, […]