4 TH EA .UsD'U B ON: (BOUL ieee 
“On that day the female began a new nesting which was brought to a 
happy conclusion August 13 when two young left the nest,” she wrote. “I 
saw them fed for the last time September 1.” 
Apparently the “Bur Oaks” also had made three attempts with success 
at last. 
The rate of singing of the red-eyed vireo interested me. Roger Tory 
Peterson (A Feld Guide to the Birds, 1947, Houghton) says this bird sings 
40 phrases a minute, but my experience differs. The median rate of the 
Jackson Park birds when singing steadily between June 18 and July 1 at 
various hours of the morning (but none earlier than 6:10) was as follows: 
“Bur Oak” 33 (15 minutes. counted); “Eastland” 653 (25 “minutes: 
“Columbia Statue” 37 (10 minutes). The median rates for two birds in 
Lincoln park on June mornings were 40 (11 minutes) and 57 (seven 
minutes). 
In southeastern Wisconsin July 6 to 8 three birds in the morning sang 
as follows: 54 (four minutes), two at the rate of 64 a minute. Ten other 
birds sang in the afternoon: 54 (five minutes), 52 (five minutes), 75 (two 
minutes), 60, 36, 36, and four at the rate of 60 phrases a minute. In the 
Wichita mountains in Oklahoma in the early morning of June 4, 1929, one 
red-eye sang from 70 to 85 times a minute, dropping to 57 to 63 later in 
the day. In Pelham, Mass., I noticed that August and September singing 
seemed to be only about half as rapid as earlier in the ‘season, around 30 
times a minute in contrast to 60. 
The rate of singing seems to vary somewhat with time of “year and 
time of day, and perhaps with weather conditions and stage of the nesting 
cycle. More important than these factors seems to be the individuality of 
the bird, since normal rates of steady singing during June and July may 
range from 33 to more than 60 phrases a minute. 
5725 Harper ave., Chicago, Ill. 
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“It Ought to Be in The Bulletin” 
Right! So WRITE! I edit the Bulletin, but YOU must write it. Put 
your idea on paper the way you think it should appear, mail to me, and I 
will make every effort to get it into the next issue. My lapses into author- 
ship will be few. My job is to judge and prepare your copy for the printer, 
selecting the best and printing as many contributions as possible. It is 
your Bulletin. —J.B. 
