Sentences with phrase «fall migration north»

Formerly unheard of in North America north of Florida and south Texas, the species is now a regular in small - to - medium flocks on fall migration north all the way to New England and the eastern Great Lakes.

Not exact matches

Monarch butterflies (Danaus plexippus) use their internal clock and the sun to guide them 4,000 kilometers south on their annual fall migration from eastern North America to central Mexico.

After spending a relatively leisurely winter and early spring luxuriating in warm tropical climates, they migrate north for a brief but highly eventful summer in North America, during which they must complete three energetically demanding and time - consuming tasks: (1) they must build nests, lay eggs, and provide for their offspring until the young reach independence, (2) they must completely replace all the feathers in their plumage as part of the annual molt, and (3) they must prepare for the fall southward migration by eating prodigiously and storing the body fat that will fuel their long - distance flinorth for a brief but highly eventful summer in North America, during which they must complete three energetically demanding and time - consuming tasks: (1) they must build nests, lay eggs, and provide for their offspring until the young reach independence, (2) they must completely replace all the feathers in their plumage as part of the annual molt, and (3) they must prepare for the fall southward migration by eating prodigiously and storing the body fat that will fuel their long - distance fliNorth America, during which they must complete three energetically demanding and time - consuming tasks: (1) they must build nests, lay eggs, and provide for their offspring until the young reach independence, (2) they must completely replace all the feathers in their plumage as part of the annual molt, and (3) they must prepare for the fall southward migration by eating prodigiously and storing the body fat that will fuel their long - distance flights.

Unable to prevent an estimated $ 5 million to $ 10 million worth of bird damage each fall to a sunflower crop which fetches between $ 330 million and $ 500 million per year, Wildlife Services staff theorized in 1994 that they might accomplish more by poisoning the birds as they migrate north each spring, so that fewer would join the fall migrations southward.

Every year at the start of Fall more than 60 % of the North Pacific Humpback Whale population will begin their migration from Alaska to Hawaii, with many of them choosing to stay in the waters off of Maui during their visit.

Gray whales are reliably found near the Farallones during their spring migration north and the fall / winter migration south.