Northern Pintail (Anas acuta) Science Article 1 abstract Northern pintail duck semen and sperm traits were characterized, and the fertility of cold-stored spermatozoa was investigated using artificial insemination. Excellent qualityejaculates containing high proportions of motile spermatozoa were collected from drakes within 20 s by a massage technique. Semen was collected in Beltsville poultry semen extender, […]
Sexual conflict and parental care in magnificent frigatebirds:full compensation by deserted females
Magnificent Frigatebird (Fregata magnificens) Science Article 2 abstract Parental care is a cooperative venture between a male and a female in many socially monogamous birds. Care is costly, and thus, sexual conflict arises between the parents about how much effort they should invest into rearing their young. The sexual conflict over care is most apparent […]
Sexual conflict and parental care in magnificent frigatebirds:full compensation by deserted females
Magnificent Frigatebird (Fregata magnificens) Science Article 2 abstract Parental care is a cooperative venture between a male and a female in many socially monogamous birds. Care is costly, and thus, sexual conflict arises between the parents about how much effort they should invest into rearing their young. The sexual conflict over care is most apparent […]
Morphology and Ornamentation in Male MagnificentFrigatebirds: Variation with Age Classand Mating Status
Magnificent Frigatebird (Fregata magnificens) Science Article 3 abstract Male magnificent frigatebird (Fregata magnificens) ornamentationincludes bright iridescent plumage and a red inflatablegular pouch. These signals are displayed during courtship, alongwith a drumming sound produced through specialized beak clackingsresonating in the gular pouch. The extent of white in theplumage identifies three age classes of nonjuvenile male. Here […]
Morphology and Ornamentation in Male MagnificentFrigatebirds: Variation with Age Classand Mating Status
Magnificent Frigatebird (Fregata magnificens) Science Article 3 abstract Male magnificent frigatebird (Fregata magnificens) ornamentationincludes bright iridescent plumage and a red inflatablegular pouch. These signals are displayed during courtship, alongwith a drumming sound produced through specialized beak clackingsresonating in the gular pouch. The extent of white in theplumage identifies three age classes of nonjuvenile male. Here […]
FLIGHT SPEEDS AND WINGBEAT FREQUENCIESOF THE MAGNIFICENT FRIGATEBIRD
Magnificent Frigatebird (Fregata magnificens) Science Article 1 abstract Fregatebirds are well specialized for remaining airborne for long periods of time. Unfortunately relatively little is actually known about their flight capabilities. The Magnificent Frigatebird (Fregata magnificens) is primarily a New World species and is seen regularly along the southern coasts of the United States. In the […]
FLIGHT SPEEDS AND WINGBEAT FREQUENCIESOF THE MAGNIFICENT FRIGATEBIRD
Magnificent Frigatebird (Fregata magnificens) Science Article 1 abstract Fregatebirds are well specialized for remaining airborne for long periods of time. Unfortunately relatively little is actually known about their flight capabilities. The Magnificent Frigatebird (Fregata magnificens) is primarily a New World species and is seen regularly along the southern coasts of the United States. In the […]
SUCCESSFUL NESTING OF LOUISIANA WATERTHRUSH IN WOODYARD HAMMOCK, LEON COUNTY, FLORIDA
Louisiana Waterthrush (Parkesia motacilla) Science Article 1 abstract There are few published records of Louisiana Waterthrushes (Seiums motacilla) breedingin Florida (Stevenson 1961, 1978) and none indicating a successful nesting. Althoughterritorial birds were recorded at Woodyard Hammock, Tall Timbers Research Station,Leon County, during three breeding-bird censuses RICHARD BREWER, Fla. Field Nat. 20(3):77-78. 1992 Download article download […]
SUCCESSFUL NESTING OF LOUISIANA WATERTHRUSH IN WOODYARD HAMMOCK, LEON COUNTY, FLORIDA
Louisiana Waterthrush (Parkesia motacilla) Science Article 1 abstract There are few published records of Louisiana Waterthrushes (Seiums motacilla) breedingin Florida (Stevenson 1961, 1978) and none indicating a successful nesting. Althoughterritorial birds were recorded at Woodyard Hammock, Tall Timbers Research Station,Leon County, during three breeding-bird censuses RICHARD BREWER, Fla. Field Nat. 20(3):77-78. 1992 Download article download […]
FIRST RECORD OF LOUISIANA WATERTHRUSH (SEIURUS MOTACILLA) FROM COZUMEL ISLAND, QUINTANA ROO, MEXICO
Louisiana Waterthrush (Parkesia motacilla) Science Article 2 abstract Cozumel Island is located in the Caribbean Sea between 20 16 and 20 36N and 86 44 and 87 02W, 17.5 km off the northeastern coast of the Yucatan Peninsula. We visited the island monthly from August 1994 to August 1995. During each visit, we performed 25 […]