Taverner and Swales, on Birds of Point Pelee. 141 



fly to another, and when two or more are discovered a bird can be 

 kept flying back and forth from one to the other many times. Their 

 voice is loud and noisy and their "0-whe-o" can be very easily mis- 

 taken for the like call of the Crested Flycatcher before one is famil- 

 iar with it. 



102. *Horizopus virens. — Wood Pewee. 



Common in the spring and very abundant in the early days of fall. 

 It is evident that the first fall movement of this species begins early 

 in the season. The 24th of August, 1907, we found the woods of the 

 Point already in possesion of innumerable hosts of Wood Pewees, 

 and through early September we have always found them the most 

 prominent bird in the landscape. Their voices can be heard any hour 

 of the day uttering their pathetically plaintive note ; and often in 

 the night, as we have lain awake in the tent, some Pewee has 

 aroused itself and a long drawn "pewee" has punctuated the darkness 

 with its soft sweetness. In 1905 it remained common until Septem- 

 ber 9, when the bulk departed, but a number were noted until we left, 

 the 14th. In 1906 the numbers gradually decreased after September 

 16, but some numbers were still present at the time of our depart- 

 ure, the 22d. In 1907 it was common from the time we arrived, Au- 

 gust 24, to the break of camp, September 6. 



103. *Empidonax flaviventris. — Yellow-bellied Flycatcher. 



Wo have noticed this bird in the spring but once, May 30 and 31, 

 1907, but in the fall we have always found it common. In 1905 it 

 was first noted September 4th and was present in large numbers the 

 9th, after which it decreased to the 13th, when we left. At the time 

 of its greatest abundance it successfully disputed with the Least Fly- 

 catcher for the first place in point of numbers. The next fall (1906) 

 they were not quite as common, but September 1 to 3, and 15 to 22, 

 we daily saw several. In 1907, from August 24 to September 6, they 

 were at all times more or less common. Their numbers culminated 

 August 29, when they became abundant, but slowly decreased the 

 succeeding days. This species seems to start on its southward mi- 

 gration about the middle of August, but others come in before the 

 earlier arrivals leave, and many linger until well into September. 



104. Empidonax trailii alnorum. — Alder Flycatcher. 



Not a common bird, but regular. It may be much more common 

 than our notes seem to indicate, for the small flycatchers are diffi- 

 cult to separate without a certain amount of concentration of obser- 

 vation on each individual bird, and this species, without any strong 

 characteristic, may very well be overlooked when the bushes are full 

 of other small flycatchers and the attention is absorbed in looking for 

 other species. 



We have noted five, May 14, 1905 ; two, September 2, 1906, and ten, 



