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Only 10 of the tagged geese were ever recorded above this altitude, and only one exceeded 6,500 m (21,300 ft), reaching 7,290 m (23,920 ft). All but one of these high-altitude flights were recorded at night, which along with the early morning, is the most common time of day for geese migration.
A common pattern in North America is clockwise migration, where birds flying North tend to be further West, and flying South tend to shift Eastwards. Many, if not most, birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost. Geese in a V formation may conserve 12–20% of the energy they would need to fly alone.
It hosts over 250 bird species and serves as an important resting and feeding site for migrating and wintering waterfowl, [8] including more than 35,000 Canada geese and 15,000 ducks using the Atlantic Flyway during the fall migration. [9] The refuge is home to one of the highest concentrations of nesting bald eagles on the Atlantic coast. [10]
Total migrating birds: 40 million Most in flight at one time: 228,000 at 2:10 a.m. on May 2 Most in one night: 1.92 million from 8:10 p.m. May 1 to 6:30 a.m. May 2
They also fly over the peaks of the Himalayas on their migratory path. [4] Whooper swan: Cygnus cygnus: Anatidae: 8,200 metres (27,000 feet) This height was attained by a flock of whooper swans flying over Northern Ireland, and recorded by radar. [2] [5] Alpine chough: Pyrrhocorax graculus: Corvidae: 8,000 metres (26,500 feet)
Canada geese fly in a distinctive V-shaped flight formation, with an altitude of 1 km (3,000 feet) for migration flight. The maximum flight ceiling of Canada geese is unknown, but they have been reported at 9 km (29,000 feet). [43] Flying in the V formation has been the subject of study by researchers.
The spur-winged goose (Plectropterus gambensis) is a large, Sub-Saharan African waterbird in the family Anatidae, which includes geese and shelducks.However, P. gambensis developed unique environmental adaptations, which resulted in the evolution of several anatomical features that are not shared with other anatids; thus, the species has been classified one step further into its own subfamily ...
Like most geese, the cackling goose is naturally migratory, with their overwintering range being most of the U.S. (locally in Western Canada, the West Coast of the U.S. and northern Mexico). The calls overheard from large flocks of cackling geese, flying in their typical "V"-shaped formation, signal the transitions into spring and fall.