PHENOLOGICAL OBSERVATIONS MACKAY. 199 



51. SPOTTED SANDPIPER (Actitis macularia}. 



52. SWALLOW (Tachycineta bicolor). 



53. Meadowlark (Sturnella magna). (E.) 



54. KINGFISHER (Ceryle Alcyori). 



55. Hummingbird (Trochilus colubris). (E. & C.) 



56. " (T. rufus and Calliope}. (W.) 



57. Nighthawk (Chordeiles Virginianus). (E. & C.) 



58. ((7. ffenryi). (W.) 



59. WILD DUCKS, First birds. 



60. " First flock. 



61. " Flocks migrating south. 



62. " Last birds. 



63. WILD GEESE, First birds. 



64. " First flocks. 



65. " Flocks migrating southward. 

 6<i. ' Last birds. 



67. First date at which " Frogs" are heard whistling. 



