Here's a peak at three sets plan for early November; "Seabirds v4: Gulls of the World" and "Nature's Wonders Crabs" and "Nature's Wonders Crabs of the World v1" in a piece entitles "The Wishbone".
The Lava Gull is endemic to the Galapagos Islands where it is found predominantly on the islands of Santa Cruz, Isabela, San Cristobal and Genovesa. It prefers mainly sandy and gravelly beaches. It can be attracted to boats and harbors. It is currently considered the rarest gull in the world with a suspected declining population of 600-800 mature adults left. They are primarily threatened by fishing activities, especially being caught on hooks as bycatch. Newcastle disease, brought into the Galápagos with domestic chickens, is thought to pose a particularly high risk of mortality and morbidity in wild Lava Gulls due to their endemic nature and small population size. It is also thought they experience some direct persecution, although it is believed the numbers included are very low. Invasive non-native species also pose a threat, particularly house rats, cats and dogs which have been shown to predate Lava Gull nests.
While the Lava Gull is rare and needs protection, the European Green Crab is quite the opposite. It considered a highly invasive species and is listed among the 100 of the World's Worst Invasive Alien Species. Due to its potentially harmful effects on ecosystems, various efforts have been made to control introduced populations of this crabs around the world. It grows to a carapace width of about 3.5 inches (90 mm). The color varies greatly, from green to brown, gray, or red. It feeds on a variety of mollusks, worms, and small crustaceans, affecting a number of fisheries. Its successful dispersal has occurred by a variety of mechanisms, such as on ships' hulls, sea planes, packing materials, and bivalves moved for aquaculture.
The Lava Gull is endemic to the Galapagos Islands where it is found predominantly on the islands of Santa Cruz, Isabela, San Cristobal and Genovesa. It prefers mainly sandy and gravelly beaches. It can be attracted to boats and harbors. It is currently considered the rarest gull in the world with a suspected declining population of 600-800 mature adults left. They are primarily threatened by fishing activities, especially being caught on hooks as bycatch. Newcastle disease, brought into the Galápagos with domestic chickens, is thought to pose a particularly high risk of mortality and morbidity in wild Lava Gulls due to their endemic nature and small population size. It is also thought they experience some direct persecution, although it is believed the numbers included are very low. Invasive non-native species also pose a threat, particularly house rats, cats and dogs which have been shown to predate Lava Gull nests.
While the Lava Gull is rare and needs protection, the European Green Crab is quite the opposite. It considered a highly invasive species and is listed among the 100 of the World's Worst Invasive Alien Species. Due to its potentially harmful effects on ecosystems, various efforts have been made to control introduced populations of this crabs around the world. It grows to a carapace width of about 3.5 inches (90 mm). The color varies greatly, from green to brown, gray, or red. It feeds on a variety of mollusks, worms, and small crustaceans, affecting a number of fisheries. Its successful dispersal has occurred by a variety of mechanisms, such as on ships' hulls, sea planes, packing materials, and bivalves moved for aquaculture.
