About 400 bird species and 80 species of fish live in the wetlands, including dozens that are threatened or endangered. The Bangweulu wetlands have been designated as a wetland of international importance by the Ramsar Convention and as an Important Bird and Biodiversity Area (IBA) by BirdLife International. In the local Bemba language, bangweulu means “where the water sky meets the sky.” It's these mirror-like floodplains, where distinguishing between sky and water can be difficult, that give the place its name. Beyond these are expansive floodplains that fill with water seasonally. Several towns are located along the shores of the lake, and swamps are located immediately to the south and east. Looking down from space, a group of mostly parallel sandy ridges form a series of islands within the lake. The Bangweulu wetlands-which include a shallow lake, several rivers, and flooded grasslands and swamps-spread across a flat area about the size of Connecticut. On May 15, 2020, the Operational Land Imager (OLI) on Landsat 8 captured this natural-color image of one such ecosystem in northern Zambia. This forces prey to the surface to breathe, giving shoebills an opportunity to strike. If decaying vegetation accumulates quickly on the bottom or temperatures change in unfavorable ways, water can quickly become depleted in oxygen. The enormous birds-some standing up to 1.5 meters (5 feet) tall, with 2.5-meter wingspans-prefer to live near slow flowing and muddy freshwater full of vegetation. The dinosaur-like shoebill is a wading bird that can stand motionless for hours before using its wide bill and explosive bursts to snap up lungfish, bichir, tilapia, eels, monitor lizards, and even baby crocodiles. For prey, however, there is little that is funny about these birds. The younger chicks are a form of insurance: back-ups in case the eldest fails to survive.With oversized bills, gangly legs, and shaggy neck feathers, there is something vaguely cartoonish about the African shoebill (Balaeniceps rex). This brutal practice also occurs among eagles. Stronger chicks will bully their weaker siblings, depriving them of food and sometimes killing them outright.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |