منابع مشابه
Lz Where Pelicans Kiss Seals
he story of how children learn to seems at f i rs t be a simple one: At a very early age they begin by scribbling with any available marker on any available surface. At first the children’s drawings are simple, clumsy and unrealistic; gradually they become more technically skilled and realistic. But the development of drawing is not quite so simple and straightforward. In fact, the story turns ...
متن کاملMandibular Bowing and Mineralization in Brown Pelicans
Brown Pelicans (Pelecanus occidentalis) plunge dive into water to capture fish with highly distensible pouches. During prey capture, the pouch may expand to hold 11 L of water and the mandibular rami may bow from a resting position of 5 cm to over 15 cm. We compared mineralization of two bending regions of the mandible with a nonbending region, and examined cross-sectional morphology to determi...
متن کاملJuvenile Galápagos Pelicans Increase Their Foraging Success by Copying Adult Behaviour
Social learning is the building block of culture and traditions in humans and nonhuman animals, and its study has a long history. Most investigations have addressed either the causation or the function of social learning. Though much is known about the underlying mechanisms of social learning, demonstrations of its adaptive value in a natural setting are lacking. Here we show that juvenile brow...
متن کاملPatterns of GPS Tracks Suggest Nocturnal Foraging by Incubating Peruvian Pelicans (Pelecanus thagus)
Most seabirds are diurnal foragers, but some species may also feed at night. In Peruvian pelicans (Pelecanus thagus), the evidence for nocturnal foraging is sparse and anecdotal. We used GPS-dataloggers on five incubating Peruvian pelicans from Isla Lobos de Tierra, Perú, to examine their nocturnality, foraging movements and activities patterns at sea. All instrumented pelicans undertook noctur...
متن کاملConvergent evolution driven by similar feeding mechanics in balaenopterid whales and pelicans.
The feeding apparatuses of rorqual whales and pelicans exhibit a number of similarities, including long, kinetic jaws that increase gape size, and extensible tissue comprising the floor of the mouth. These specializations enable the engulfment of large volumes of prey-laden water in both taxa. However, the mechanics of engulfment feeding in rorquals and pelicans have never been quantitatively c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Blue Jay
سال: 1951
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay1039