AVES. 533 



half of the tarsi with short, close set featliers, and scutellated on their ante- 

 rior surface ; cere slightly hispid ; wings long and powerful ; toes free ; outer 

 one capable of taking a retroverted direction ; talous of equal size, much 

 bent, and furnished with a deep internal groove. 



Haliaetus alhicilla. — The Great Sea Eagle. Plate xxvi. fig. 4. Dusky, 

 bro^'n above, intermixed with ashy-gray, spotted with uraber-brovvn ; under 

 parts fame colour but paler ; tail white ; cere and legs pale yellow j talons 

 black. Two feet four inches long. Inhabits Europe. 



Haliaetus arundbtaceus. — The Osprey. — Gmelin. Plate x.Kvi. fig. 5. 

 Described, vol. iii. p. 59, The Bald Eagle ; and 60, Osprey. 



Genus 9. — FALCO. — Linnceiis. 



Generic Character. — Beak hooked, generally bent from its base, which is 

 furnished with a somewhat hairy cere ; mandibles notched in some species ; 

 nostrils lateral, rounded, or oval, open, and placed within the cere ; tarsus 

 covered with feathers or scales ; three toes before and one behind, the ex- 

 terior usually united at its base to the middle toe ; talons sharp, much hook- 

 ed, and retractile. 



Section I — Falcons. — Beak short, bent from its base; upper mandible 

 with one and sometimes with two notches, which fit into hollows in the 

 under mandible; legs robust; toes long, strong, talons sharp and hooked ; 

 tarsus short ; wiugs long, first and third quill feathers of equal length, the 

 second q\iill being the longest. 



FalcQ tinnunculus The Kestril— Female. Plate xxvi*. fig. 7. Describ. 



ed, vol. iii p. 79., 



Section 2.— Hawks. — Wings short, terminating at two-thirds the length of 

 the tail; first quill shorter than the second, the third nearly equal to the 

 fourth ; tarsus as long as the intermediate toe ; claw greatly h'ooked, and 

 sharp. 



Falco pahimbarius. — The Goshawk. Plate xxvi. fig. 8. Described, vol." 

 iii. p. 80. 



Falco nisus. — The Sparrow-Hawk — Female. Plate xxvi. fig. 7. De. 

 scribed, vol. iii, p. 81. * 



Sub-Genus 3. — Kites. — With oblique nostrils, having a fold at their exte- 

 rior margin ; tarsus short, feathers extending a little under the knee ; wings 

 very long, the third and fourth quills longest ; tail forked. 



Falco milvus. — The Kite or Gled. Plate xxviii. fig. 1. Described, vol. iii. 

 p. 86. 



Sub.Genus 4. — Buzzards. — Beak small, and bent from the base ; wings 

 somewhat shorter than the tail, the first four feathers notched near their tip ; 

 first quills very short, the fourth being the longest ; feathers on the thighs 

 liiug and pendulous ; tarsus short, talons slightly hooked. 



Falco huleo. — The Common Buzzard. Plate xxvi. fig. 6. Described, vol. 

 iii. p. 87. 



Sub.Genus 5. — Harriers. — Beak bent from its base ; nostrils ovate ; tail 

 long, rounded ; wings long, first quill very short, the third and fourth long, 

 est ; tarsus long and slender. 



Falco ci/anciis. — The Hen-Harrier. Plate xxvi*. fig. 3. Described, voL 

 iii. p. 88. 



