It is a white bird decorated with buff feather during breeding season and has a sharply pointed yellow short beak. In Egypt, usually inhabitant in the Nile Valley and Delta, nesting colonially in farms and wetlands on bushes with near water bodies. His Arabic name, Abu quirdan means “father of ticks”, a name emanated from the abundance of bird ticks grow in her spawning colonies. The cattle egret (Bubulcus ibis, Linnaeus, 1758), the multinational heron species (Family: Ardeidae, Order: Ciconiiforms) disperses in warm climates where its distribution is rapidly expanding. The laryngeal mound shows certain features that are unique as an adaptation to lifestyles and bird’s habitat. The glandular epithelium of the laryngeal salivary glands and chondrocytes of the laryngeal cartilages showed strongly positive alcian blue reaction. Two groups of intrinsic laryngeal skeletal muscles have connected the cartilages. The glottis within the laryngeal mound was supported by hyaline cartilages dorsally by paired arytenoid cartilages, ventrolaterally by cricoid cartilage, and caudodorsally by procricoid cartilage. Those glands were surrounded by abundant aggregation of lymphocytes, extended overlying the surface lining epithelium. Histologically, laryngeal salivary glands termed (cricoarytenoid salivary glands) of the laryngeal mound were simple tubular type and were arranged in one row within the lamina propria connective tissue close to the lamina epithelialis. ![]() Furthermore, the terminal part of the laryngeal mound (except the middle part) was bordered a transverse row of pyramidal-shaped papillae, which demarcated from the esophagus. By SEM view, the lateral aspect of the caudal third of the laryngeal mound had a serrated mucosal appearance, forming of 6–7 finger-like projections. It represented 20.55 and 67.87% of the total length of the oropharyngeal floor and the pharyngeal floor, respectively. The laryngeal mound ( Mons laryngealis) was a pear-shaped musculoskeletal elevation. Heads of ten healthy adult male Egyptian cattle egrets were used in this study. This study was obtained with the aid of scanning electron microscopy (SEM) and histological techniques. It will also notify you about upcoming full moons and new moons.According to our acknowledgment this is the first full anatomical description of the studied laryngeal mound of the Egyptian Cattle Egret (Bubulcus ibis, Linnaeus, 1758). Installing the free edition of our screensaver to see the current moon phase whenever the screensaver starts. full moon to the next full moon, takes approximately 29.53 days.įor more precise timing, there are moon phases calendars ( and of course our moon phases screensaver) with precomputed dates for the full moon and the other phases. Duration of each of the moon phasesĮach of the 4 lunar phases ( new moon, first quarter, full moon, last quarter) lasts approximately 7 days (~7.4 days), but varies slightly due to lunar apogee and perigee.Ī complete circle, e.g. ![]() If they are perfectly aligned, then we have a solar eclipse. When the moon is between the earth and the sun, we have a new moon. Moon phases diagram/image credits: StarChild team at NasaĪs seen in the diagram, when the earth is between the moon and the sun, then we see a full moon. When the earth, the moon and the sun are almost aligned, most of the surface of the moon (as seen from the earth) is illuminated by the sun. ![]() The changing positions appear to us as different moon phases. See the diagram of the full moon below.ĭepending on earth's, moon's and sun's positions we see a different area of the moon being illuminated by the sun. We only see the Moon because sunlight reflects back to us from its surface.
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