Clark said he and others involved in the banding project, which tracks the movement of raptors, have learned that more sharp-shinned hawks are staying north in the winter because the numerous backyard bird feeders promise plenty of sparrows.
42.
The refuge enjoys a reputation as a premier raptors during the fall and spring migration period including the osprey, rough-legged buzzard and Swainson's hawk, hen harrier, sharp-shinned hawk and Cooper's hawk.
43.
Not to mention numerous mammalian carnivores, at least ten avian predators often hunt them and they are among the most regular prey species for some smaller raptors, i . e . the sharp-shinned hawk and eastern screech-owl.
44.
In 2003, The Wetlands Institute identified the American redstart, black and white warbler, black-throated blue warbler, downy woodpecker and sharp-shinned hawk, but none of the egrets and herons that were traditionally identified with the area.
45.
The merlin will readily take prey that is flushed by other causes, and can for example be seen tagging along sharp-shinned hawks ( " Accipiter striatus " ) to catch birds that escape from this ambush predator into the open air.
46.
Indigenous populations of Rocky Mountain Elk exist as well as mule deer, antelope, black bear, cougar, California bighorn sheep, ruffed and blue grouse, pileated woodpecker, sharp-shinned hawk, bald eagle, pine marten, mink, beaver.
47.
Typical species found during the months from September to December include red-tailed hawk, sharp-shinned hawk, peregrine falcon, ferruginous hawk, Swainson's hawk, Cooper's hawk, osprey, northern harrier, American kestrel, and bald eagle.
48.
Broad-winged Hawks are the most common raptors sighted, but the sharp-eyed birder will notice Sharp-shinned, Red-shouldered, and Coopers Hawks, Osprey, Bald and Golden Eagles, American Kestrels, Northern Harriers, Merlins, Peregrine Falcons, and Swallow-tailed Kites.
49.
But other visual treats abound, including such bird species as the endangered Puerto Rican sharp-shinned hawk ( at the forest's middle and lower elevations ), the elfin wood warbler ( in upper-level cloud forests ), the canary-winged parakeet and the red-legged thrush.
50.
Current research and conservation efforts are directed at the critically endangered Ridgway's hawk in the Dominican Republic, the Puerto Rican Sharp-shinned Hawk, the Grenada hook-billed kite confined to the island of Grenada, and the Cuban kite, endemic to Cuba and among the rarest species of raptor in the world.
