They also have a scaly skin, enabling them, as opposed to most amphibians, to live outside of water. Like the buteos (e.g., the Red-tailed Hawk Buteo jamaicensis) and harriers (the Northern Harrier Circus cyaneus is the only Canadian harrier), the accipitrine hawks have rounded wings; however, these are shorter than in the other two groups. In Indigenous languages, like Mi’kmaq, it is known as k’at or g’at, the Algonquins call it pimzi or pimizi, in Ojibwe bimizi, in Cree Kinebikoinkosew and the Seneca call it goda:noh. The Sea Otter’s fur is one of the thickest in the animal kingdom, with 150,000 or more hairs per square centimetre. Adult eels vary in coloration, from olive green and brown to greenish-yellow, with a light gray or white belly. El oso polar es muy hábil cuando tiene que esconderse, ya sea bajo la tierra, en el agua o en el hielo y esto lo ayuda a cazar focas y a huir de los cazadores. Indeed, turtles have an impressively long life for such small animals. The lobster’s mouth is located just below its eyes. As an invertebrate, it lacks bones, but it does have an external shell, or exoskeleton, making it an arthropod like spiders and insects. El grupo familiar se divide cuando los oseznos tienen unos dos años y medio. Este deshielo fuerza a toda la población de osos a regresar a tierra firme de dos a cuatro meses, entre el verano y el principio del otoño, a la espera de que se vuelva a formar el hielo. Por consiguiente, en total, se cazan menos osos que si se atribuyeran todos los permisos a cazadores que cazan para alimentar a sus familias. Los osos que aún no han alcanzado la madurez pueden correr distancias de 2 km pero los de más edad se cansan rápidamente por su peso y porque están bien protegidos contra el frío, lo cual hace que sientan calor pronto. El primer año de vida independiente de las crías es, sin duda, el periodo más difícil de la vida del oso polar. The Little Brown Bat, or Little Brown Myotis (Myotis lucifugus) weighs between 7 and 9 g, and has a wingspan of between 25 and 27 cm. Krokotak Mercredi approchant et surtout pour les vacances à venir, je vous propose un atelier de découpage... Blog dedicato al design per bambini, camerette, idee creative, feste e giochi per i più piccoli. No suelen atacar a los humanos excepto para proteger a sus crías o cuando están hambrientos. El oso polar está maravillosamente adaptado al medio ártico. Their belly is generally yellow-white to light green. Larsen, T. 1978. Some may live up to 100 years, but most probably live to be 60 years of age. Their tadpoles (the life stage between the egg and the adult) are grey or brown. RECURSOS para el aula de EDUCACIÓN INFANTIL. In general, lamprey are one of three different life history types and are a combination of non-parasitic and parasitic species. A menudo cavan la guarida en la ladera sur de colinas o valles, donde los vientos dominantes del norte forman grande amontonamientos de nieve. Las hembras adultas tienen la mitad del tamaño de los machos y alcanzan su tamaño máximo entre los cinco y los seis años. Comen restos de animales muertos que encuentran y, ocasionalmente, también comen hierba y frutillas. The world of the polar bear. Cuando no se logra cazar ningún oso polar, el permiso de caza deportiva no puede atribuirse a otro cazador. It’s these wings, tail and streamlined bodies that make their fast, acrobatic flight possible. The genus is represented in North America by the Canvasback, Redhead, Greater Scaup, Lesser Scaup, and Ring-necked Duck. These bones are covered by horny scutes made of keratin (like human fingernails) or leathery skin, depending on the species. There are about 39 species of lamprey currently described plus some additional landlocked populations and varieties. Males can grow up to 6.2 m -the average size being 4.7 m- and weigh about 1,600 kg. They’re normally reddish-brown in colour. The Downy’s name refers to the soft white feathers of the white strip on the lower back, which differ from the more hairlike feathers on the Hairy Woodpecker. The gulls are a family of birds that live mainly at sea, either along the shore, or out in the ocean itself. Narwhals do occasionally break the tip of their tusk though which can never be repaired. Of the 198 species of woodpeckers worldwide, 13 are found in Canada. The shape and colour of the bill help in identifying the Trumpeter and Tundra swans in the field. Si el oso pardo o el oso negro carece de comida en primavera o en verano, cuando no está hibernando en su guarida, sencillamente morirá de hambre. More research is needed to know if these turtles are still native individuals. Unlike seals and sea lions, the Sea Otter has little body fat to help it survive in the cold ocean water. The Trumpeter Swan has a deep, resonant, brassy, trumpet-like voice; the voice of the Tundra Swan is softer and more melodious. Around its mouth are small appendages called maxillipeds and mandibles which help direct food to the mouth and chew. The North Atlantic Right Whale (Eubalæna glacialis) is one of the rarest of the large whales. Los machos viven unos 25 años, las hembras se acercan a los 30. Although the average lifespan of a Barn Swallow is about four years, a North American individual older than eight years and a European individual older than 16 years have been observed. Russia = Rusia North Pole = Polo Norte Alaska = Alaska Canada = Canadá. In rocky areas, a cod may be a darker brown colour. Free weblog publishing tool from Google, for sharing text, photos and video. The Phalaropes are the only shorebirds that feed at sea. Las hembras gestantes pueden pesar de 400 a 500 kg antes de entrar en la guarida donde parirán en otoño. Females tend to be slightly larger than males but are otherwise identical. © Su Majestad la Reina en derecho de Canadá, representada por el ministro del Medio Ambiente, 2002. This ridge can be used by researchers to differentiate one narwhal from another. The Downy Woodpecker looks much like the larger Hairy Woodpecker Picoides villosus, but there are some differences between them. De esta cantidad, entre 500 y 600 son cazados por cazadores inuits y amerindios de Canadá conforme a un sistema de cuotas que se examina cada año en Nunavut, Territorios del Noroeste, Yukón, Ontario, Manitoba, Quebec y Terranova y Labrador. Prior to 1989, all Canadian chorus frogs were considered to be one species, as they are very similar – it’s even hard for scientists to differentiate them! Ya que ya no pueden cazar focas, viven principalmente de sus reservas de grasa y conservan su energía al permanecer inactivos más del 80 % del tiempo. Los machos adultos miden de 240 a 260 cm de largo y pesan entre 400 y 600 kg aunque pueden llegar a pesar 800 kg, casi tanto como un pequeño auto. Also, the Eastern Box Turtle (Terrapene carolina) has either such a small population that it is nearly Extirpated, or the few individuals found in Canada are actually pets released in the wild. But the American Crow is smaller (with a wingspan of about 75 cm) and has a fan-shaped tail when in flight (with no longer feathers). Los inuits locales guían a estos cazadores a cambio de sumas situadas entre 18 000 y 20 000 dólares por caza. They comprise a diverse group of species, including the plovers, oystercatchers, avocets, stilts, turnstones, sandpipers, yellowlegs, snipes, godwits, curlews, and phalaropes. El oso polar emite un gruñido grave para advertir a los otros osos, sobre todo cuando defiende su comida. La población mundial actual de osos polares se sitúa entre 25 000 y 30 000 ejemplares. The Downy is about 6 cm smaller than the Hairy, measuring only 15 to 18 cm from the tip of its bill to the tip of its tail. Adults moult their flight feathers (wings and tail) gradually—retaining the ability to fly at all times—and only once per year, usually in the non-breeding area. Puede galopar cuando lo persiguen pero no le gusta correr mucho tiempo. The Semipalmated Sandpiper Calidris pusilla, only about 30 g in weight and 14 cm long, is one of Canada’s smallest shorebirds. En la mayor parte del Ártico, la preparación de las guaridas donde paren las hembras empieza a mediados de octubre; las hembras gestantes buscan grandes amontonamientos de nieve cerca de la costa. A high quantity of tubules and nerve endings in the pulp –the soft tissue inside teeth – of the tusk have at least one scientist thinking that it could be a highly sensitive sensory organ, able to detect subtle changes in temperature, salinity or pressure. Se alimenta principalmente de focas anilladas pero también captura focas barbudas, de Groenlandia, capuchinas y comunes. Su técnica de caza aún no es eficaz y es probable que los osos mayores se apropien de las focas que hayan podido cazar. 04-jul-2019 - Explora el tablero de Vanessa Nolf "Oso polar" en Pinterest. The Barn Swallow (Hirundo rustica) is a medium-sized songbird, about the size of a sparrow. Lamprey don’t have gills like other fish species but have pores for breathing. It is born in saltwater and migrating to freshwater to grow and mature before returning to saltwater to spawn and die. Its head makes up about a fourth of its body length, and its mouth is characterized by its arched, or highly curved, jaw. Under the whale’s skin, a blubber layer of sometimes more than 30 centimetres thick helps it to stay warm in the cold water and store energy. The American Lobster (Homarus americanus) is a marine invertebrate which inhabits our Atlantic coastal waters. But while it is average-sized, it’s far from average-looking! When in flight, it has a wedge-shaped tail, with longer feathers in the middle. Most, 22 of the 39 species, are non-parasitic and spend their entire lives in freshwater. Freshwater turtles are reptiles, like snakes, crocodilians and lizards. The Atlantic Cod shares some of its physical features with the two other species of its genus, or group of species, named Gadus. Una vez excavada la guarida, la nieve impulsada por el viento cubre rápidamente la entrada del túnel de entrada. Para ello, los osos polares cuentan con una gruesa capa de grasa que le permite protegerse del frío, así como mantenerse hidratado en los momentos en que la comida escasea. La sensación de blancura que todos apreciamos al ver a un oso polar se debe al efecto que produce la luz al reflejarse sobre su pelaje transparente y hueco. Each claw serves a different purpose: the bigger, blunter one is used for crushing, and the smaller one with sharper edges, for cutting. Se trata de una fuente importante de ingresos para las pequeñas localidades del norte de Canadá. Recursos para Maestros y Padres. The adult male is a large, grey-backed, white-breasted duck with a reddish-chestnut head and black neck and chest. Usa sus grandes patas delanteras como poderosos remos, mientras que las traseras le sirven de timón. Sus caninos son largos y la superficie con la que tritura de sus dientes de las mandíbulas es irregular, lo cual demuestra su adaptación a un régimen carnívoro. It resembles the larger male Canvasback. El apareamiento se produce en los meses de abril y mayo, cuando los osos cazan focas en la banquisa. It is an agile flyer that creates very acrobatic patterns in flight. Signs and sounds. A third type of swan, the Eurasian Mute Swan, is often seen in Canadian parks and zoos. The Cooper’s Hawk is intermediate in size; the male Cooper’s is easily confused with the female Sharp-shinned Hawk, and the female Cooper’s Hawk is almost as large as the male Northern Goshawk.