Masked Booby (Sula dactylatra) Science Article 4 abstract Punta Suarez, Isla Espanola, Galapagos Islands, Masked Boobies (Sula dactylatra) nested at the edge of a cliff while Blue-footed Boobies (Sula nebouxiz) nested farther inland. Elsewhere in the Galapagos, Blue-footed Boobies nested near cliff edges at seven of eight sites where Masked Boobies were absent. DAVID CAMERON […]
Category: Tropical Ocean
POSSIBLE HYBRIDIZATION BETWEEN THE PERUVIAN BOOBYSULA VARIEGATA AND THE BLUE-FOOTED BOOBY S. NEBOUXIIIN LOBOS DE AFUERA ISLANDS, PERU
Masked Booby (Sula dactylatra) Science Article 3 abstract Many hypotheses have been formulated to explain the causes of the relatively uncommon phenomenon of siblicidal aggression. All have been supported by evidence, however, no single hypothesis can fully explain the cause of avian siblicidal aggression Melissa Schramm ET AL., Avian Siblicidal Aggression Download article download full […]
Plumage and sexual maturation in the Great Frigatebird Fregata minor in the Galapagos Islands
Great Frigatebird (Fregata minor) Science Article 1 abstract The adaptive significance of distinctive immature plumages and protracted sexual and plumage maturation in birds remains controversial. This study aimed to establish the pattern of plumage maturation and the age at first breeding in the Great Frigatebird Fregata minor in the Galapagos Islands. We found that Great […]
Progressive Analysis of Avian Vocal Repertoires with Special Reference to the Brown Noddy
Brown Noddy (Anous stolidus) Science Article 3 abstract Three steps are necessary in the study of avian vocal repertoires (aside from developmental and physiological aspects) (.1) The various vocalizations and the situations (context) under which they are given must be identified and described under natural conditions. The description should be objective enough so the calls […]
Egg specific gravity and incubation in the Sooty Tern and Brown Noddy
Brown Noddy (Anous stolidus) Science Article 4 abstract Flotation characteristics of birds’ eggs are commonly used to estimate their age. Schreiber (1970) and Hays and LeCroy (1971) have recently attempted to quantify the relationship between the appearance (degree of emergence and position) larid eggs placed in water and the age of the eggs. William Y. […]
Longevity of the Brown Noddy
Brown Noddy (Anous stolidus) Science Article 5 abstract Despite its abundance and pantropical range, little published information exists on the longevity of the Brown Noddy (Anous stolidus). Woodward (atoll Research Bull., 164: 280, 1972) reported a maximum known survival of 10 years for Brown Noddies banded as adults onKure Atoll, Hawaii. William Y. Brown, Bird […]
South Carolina Specimen of the Brown Noddy
Brown Noddy (Anous stolidus) Science Article 2 abstract The Brown Noddy (Anous stolidus) breeds in the tropics and subtropics as far north as the northern Bahamas and the Dry Tortugas, Florida. In winter it stays in warm tropical or subtropical waters, usually within 100 km of nesting colonies (Chardine and Morris 1996). Will Post et […]
Experiments on Nestling Recognition by Brown Noddies (Anous stolidus
Brown Noddy (Anous stolidus) Science Article 1 abstract Davies and Carrick (1962) suggested that adults should distinguish their own young from offspring of neighboring conspecifics by the time their young become mobile enough to leave the nest and mix with other youngbirds. The influence of the type of nest in shaping recognition behavior is illustrated […]
CLIMATOLOGICAL EFFECTS ON THE BREEDING OF TERNS
Brown Noddy (Anous stolidus) Science Article 6 abstract The physical circulation in the Western Indian Ocean controls the supply of nutrients, and this, combined with the stability of the surface layer and the availability of sunlight controls the primary production. In this note, we review two papers’ findings on how the physical conditions ultimately impact […]
Red-billed Tropicbird (Phaethon aethereus)
[order] PHAETHONTIFORMES | [family] Phaethontidae | [latin] Phaethon aethereus | [UK] Red-billed Tropicbird | [FR] Phaeton a bec rouge | [DE] Rotschnabel-Tropikvogel | [ES] | [NL] Roodsnavelkeerkringvogel Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Phaethon aethereus TrO e PO, Caribbean, c AO, nw IO Phaethon aethereus aethereus s Atlantic Phaethon […]