. Birds of the Colorado Valley : a repository of scientific and popular information concerning North American ornithology . rbler 288 37. Black and Yellow Warbler 291 38. Golden-crowned Accentor 296 39. Kentucky Warbler 309 40. Maryland Yellow-throat 312 XV XVI BIEDS OF THE COLOEADO VALLEY Pago. Yellow-breasted Chat 317 42. Canadian Fly-catcliing Warbler 324 43. Hooded Fly-catching Warbler 325 44. Wilsons Green Black-capped Fly-catching Warbler 328 45. Outline of head of Hepatic Tanager 356 46. Details of structure of Barn Swallow 408 47. White-bellied Swallow 414 48. Crescent Swallow
. Birds of the Colorado Valley : a repository of scientific and popular information concerning North American ornithology . rbler 288 37. Black and Yellow Warbler 291 38. Golden-crowned Accentor 296 39. Kentucky Warbler 309 40. Maryland Yellow-throat 312 XV XVI BIEDS OF THE COLOEADO VALLEY Pago. Yellow-breasted Chat 317 42. Canadian Fly-catcliing Warbler 324 43. Hooded Fly-catching Warbler 325 44. Wilsons Green Black-capped Fly-catching Warbler 328 45. Outline of head of Hepatic Tanager 356 46. Details of structure of Barn Swallow 408 47. White-bellied Swallow 414 48. Crescent Swallow 450 49. Wing of Ampelis garrulus 461 50. Head of Cherry-bird 472 50 bis. Seio2)haga picta (j). 335) 482 51. A Vireo(F. gilvus) 484 52. Vireo flavoviridis 490 53. Vireo harhatuhis 492 54. Vireo j)Mladelj)Mcus 493 55. Vireo flavifrons 494 56. Vireo oUcaceiis 496 57. Vireo gilvus 501 58. Vireo swainsoni 502 59. Vireo solitarius 506 60. Viieo plumheus 515 61. Vireo novehoracensis 520 62. Vireo huttoni 525 63. Vireo ielli 527 64. Vireo pusillus 531 65. Bills of Shrikes 536 66. Aspect of a Shrike 547 Tail-piece to Index 807. BIRDS OF THE COLORADO VALLEY CHAPTER I. —THRUSHES Fam. TUKDlDiE THE birds of this family, together with those of the familieswhich follow in this work to the Flycatchers {Tyrannidce),inclusively, belong to the great gvo\\\)oi Passeres. Any Passerinebird of this country may be recognized by the character of thefeet, which are perfectly fitted for grasping—in other words, forj)ercMng upon such support as the twigs of trees, for many kinds of birds, such as Birds of Prey, Herons,and various others that might be mentioned, perch habitually,yet the truly insessorial foot, as exhibited among Passeres, isunmistakable in several features. The hind toe, which is neverwanting, is inserted on the same level as the front toes collec-tively; it is always directed straight backward, being thus op-posed directly to the front toes ; it is of considerable leng
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