Tag: all of Anous

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 […]

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 […]