The dinosaur is like the bald eagle, except it's an unofficial symbol instead of a sanctioned one.

Introduction Kleptoparasitism by animals pertains to the opportunistic or habitual stealing of food from other animals. The kleptoparasite benefits by eating food that it could not have obtained itself or by saving energy by not having to search for or capture that food (Shealer et al. 2005). Kleptoparasitism is particularly common in waterbirds, including gulls, skuas, jaegers, and fri gatebir...

Southwest Plains (JSDA Forest Service Research Note RM-RN-535 May 1995 Rocky Mountain Forest and Range Experiment Station Constructing Bald Eagle Nests With Natural Materials Teryl G. Grubb1 A technique for using natural materials to build artificial nests for bald eagles (Haliaeetus leucocephalus) and other raptors is detailed. Properly constructed nests are as permanently secured to the nest ...

Now, the U.S. Fish and Wildlife Service (FWS) in Washington, D.C., is poised to declare victory for the majestic avian by removing the bald eagle from its list of threatened species by a court-ordered deadline of 29 June. Bald-eagle experts agree with the move, although some argue that a small population in the Southwest isn't ready for delisting. Many remain worried, however, about how well ne...

The polypeptide, antigenic, and morphological structure of the mouse mammary tumor virus was studied following protease digestion of intact virions. Intact, untreated virions (rho = 1.17 g/ml) had characteristic envelope spikes, five major polypeptides, and were precipitated by antisera against gp52. Two of the major polypeptides, with molecular weights of 52,000 (gp52) and 36,000 (gp36), had c...