MIGRATION OF OUR BIRDS 207 



the time of arrival for the Orchard Oriole. In May the earliest date 

 in six years was the 3rd, in 1913; the latest, the nth, in 1916, 

 Only one date in April was found among my notes — the 28th, in 

 1914. 



The spring migration of the Yellow Warbler usually occurs in 

 the last week of April. In four years the date of arrival was between 

 the 26th and 30th of April, two years the day being the 30th. In 

 two other years this warbler came on May 3, 191 2, and May n, 191 7. 



The Cedarbird is a species that shows marked irregularity in 

 it spring migration. Looking over the records of six years, I found 

 only one for April — the 30th, in 19 16. All the others are scattered 

 through May — the 2nd, in 1914; the nth in 1917; the 14th in 1915; 

 the 1 6th in 19 13; the 24th in 19 12. Cedarbirds wander about 

 much, and to this habit I ascribe their great irregularity in appearing 

 in Spring. 



Normally the spring migration of the Red-headed Woodpecker 

 should occur late in April. Previous to 19 14, this species arrived 

 only once in March — on the 18th, in 191 1. There was also but one 

 migratory record early in April— the 4th, in 19 10. The present year 

 my latest date of the spring migration of the Red-headed Wood- 

 pecker was made — May 13. In 1914 and 19 15 this woodpecker 

 did not migrate, having remained during the winter. 



The height of the warbler migration occurred on the 16th and 

 17th of May, in 19 17 — which was a little late. The weather was 

 very cool for the first half of the month, and retarded the movement 

 of the migrants. The normal time for the great influx of the war- 

 blers is the second week of May. The lateness of arrival this spring 

 prolonged the stay of quite a number of the warblers into June. 

 I never before made so many warbler records in June. 



Another unprecedentedly late migrant this spring was the 

 Yellow-billed Cuckoo — arriving on June 13. The Black-biJled 

 Cuckoo was first seen on May 19, and again on June 7. 



Certain species that were very locally distributed were probably 

 not recorded on the actual date of migration. Among these are the 

 Grasshopper Sparrow, Prairie Horned Lark, Sycamore Warbler, 

 Acadian Flycatcher. 



February Arrival Departure 



Arrival Departure 26 Song Sparrow 



15 Hairy Woodpecker 26 Bluebird 



23 Robin 28 Tufted Titmouse 



