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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.
The common nighthawk winters in southern South America, but distribution in this range is poorly known due to difficulties in distinguishing the bird from the lesser nighthawk and in differentiating between migrants and overwintering birds. In some South and Central American countries, a lack of study has led to restricted and incomplete ...
Sandhill cranes fly south for the winter. In their wintering areas, they form flocks over 10,000. One place this happens is at Bosque del Apache National Wildlife Refuge, 100 miles (160 km) south of Albuquerque, New Mexico. An annual Sandhill Crane Festival is held there in November.
Birds flying south over the William L. Finley National Wildlife Refuge. Most birders would say May, when birds are migrating north in a short time window, is the most exciting time of the year ...
Record warmth and little snow in the winter of 2023-24 have allowed many birds to migrate back to Wisconsin far earlier than normal this spring. Smith: Gone barely a month, migrating birds are ...
In fall and winter, local birds will flock together, while many in the north will move down south to spend the cold months, according to the Carolina Bird Club. When spring comes, adult American ...
They will fly south to winter with the help of their parents. [32] Arctic terns are long-lived birds that spend considerable time raising only a few young, and are thus said to be K-selected. [33] A 1957 study in the Farne Islands estimated an annual survival rate of 82%. [34]
The first Christmas Bird Count in Great Smoky Mountains National Park was held in 1935. This season, several counts will include areas of Western North Carolina and East Tennessee, and two will ...