20. Chimney Swift. Chætura pelagica.—Abundant.
21. Ruby-throated Humming-bird. Trochilus colubris.—Common in the forests of Walden's Ridge. Seen but twice elsewhere. First seen April 28.
22. Kingbird. Tyrannus tyrannus.—Seen but three times—nine specimens in all. First seen April 29.
23. Crested Flycatcher. Myiarchus crinitus.—Noticed daily, with two exceptions.
24. Phœbe. Sayornis phœbe.—Common on Lookout Mountain and Walden's Ridge. Not seen elsewhere.
25. Wood Pewee. Contopus virens.—Very common. Much the most numerous member of the family. Present in good force April 27, and gathering nest materials April 29.
26. Acadian Flycatcher. Green-crested Flycatcher. Empidonax virescens.—Common.
27. Blue Jay. Cyanocitta cristata.—Scarce (for the blue jay), and not seen on Walden's Ridge!
28. Crow. Corvus americanus.—Apparently much less common than in Eastern Massachusetts.