Priority Mail Dimensional Weight Calculation. 1Round off (e.g., 20.5 rounded off to the next whole number is 21, and 20.4 rounded off is 20), 2Round up (e.g., rounding up either 44.2 or 44.8 to the next whole pound is 45).
The Black Swallowtail (Papilio polyxenes) is a species of butterfly. It is also called the American Swallowtail or Parsnip Swallowtail. It is found throughout much of North America.
1 TREE SWALLOW: The Tree Swallow is a common swallow of marshes and open fields. 2  It is an inhabitant of nest boxes. 3  The Tree Swallow winters farther north than any other American swallow, and it returns to its nesting grounds long before other swallows come back. Cliff Swallow chicks only get to leave the nest once, no going back. 2  They have to wait until the time is right. 3  An unmated male Barn Swallow may kill the nestlings of a nesting pair. 4  His actions often succeed in breaking up the pair and afford him the opportunity to mate with the female.