OLIVE-SIDED FLYCATCHER. 4II 
determined to claim was circumscribed by the tops of a cluster 
of tall Virginia junipers or red cedars, and an adjoining elm 
and decayed cherry-tree. From this sovereign station, in the 
solitude of a barren and sandy piece of forest adjoining Mount 
Auburn, she kept a sharp lookout for passing insects, and pur- 
sued them with great vigor and success as soon as they ap- 
peared, sometimes chasing them to the ground, and generally 
resuming her perch with an additional mouthful, which she 
swallowed at leisure. On descending to her station she occa- 
sionally quivered her wings and tail, erected her blowsy cap, 
and kept up a whistling, oft-repeated, whining call of ’pu ’pi, 
then varied to pu pip, and ’fip pit, also at times 'Sip "Dip "pu 
‘pip "pip ‘pip, "pit 'pit pip, or 'ti, 'té ‘tt, and ti ti. This 
shrill, pensive, and quick whistle sometimes dropped almost to 
a. whisper or merely ’A#%. The tone was in fact much like that 
of the "phi "phi ’phit of the Fish Hawk. The male, however, 
besides this note, at long intervals had a call of ’eh’phédze or 
‘h’phebéd, almost exactly in the tone of the circular tin whistle, 
or bird-call, being loud, shrill, and guttural at the commence- 
ment. The nest of this pair I at length discovered in the 
horizontal branch of a tall red cedar 40 or 50 feet from the 
ground. It was formed much in the manner of the Kingbird, 
externally made of interlaced dead twigs of the cedar, inter- 
nally of the wiry stolons of the common cinquefoil, dry grass, 
and some fragments of branching Zichen or Usnea. It con- 
tained 3 young and had probably 4 eggs. The eggs had been 
hatched about the 2oth of June, so that the pair had arrived in 
this vicinity about the close of May. 
The young remained in the nest no less than 23 days, and 
were fed from the first on beetles and perfect insects, which 
appeared to have been wholly digested, without any regurgi- 
tation. Towards the close of this protracted period the young 
could fly with all the celerity of the parents; and they prob- 
ably went to and from the nest repeatedly before abandoning 
it. The male was at this time extremely watchful, and fre- 
quently followed me from his usual residence, after my paying 
him a visit, nearly half a mile. These birds, which I watched 
