Table 47.--Monthly Distribution of Barn Owl Recovery Reports 
This breakdown is restricted to birds banded as juveniles through 
1941 but includes recoveries of birds reported both dead and alive 
das as those with no information as to method of capture up to 
1946. 
Year Recovered Approximate Number of Months Recovered after Banding 
after Banding O123%4 567 8 § 10 11 Total 
First year 8105999 5 812 6 3 4 88 
Later years 5815 77 3 6410 Oo 3 59 
As table 8 shows, the age ratio in barn owl recoveries is 
about 60 per cent juveniles to 0 per cent adults.: The vercentage of 
adults should increase slightly as additional birds are reported. The 
percentage of young in the "found dead" sample and in the sample of 
birds reported shot do not differ significantly from this 60-lj0 ratio. 
The similarity in age ratios between birds reported dead and those 
captured, caught, or found injured implies that the individuals in 
this latter category are representative of those dying in the popula- 
tion. 
Table 48.—Age Ratios in Barn Owl Recoveries 
Juvenile-banded birds as in table 7 except that only specific 
methods of recovery were tabulated. Based on birds banded 
through 191, this table includes recoveries received through 
1946. Some additional reports of birds recovered as adults 
should slightly decrease the percentage recovered as juveniles 
and make the data comparable to that found in a life table. 
When Reco vered 



How Recovered As Young As Adult Total % Young 
Found dead 2h 25 9 “ig 
Shot 32 12 hh 73 
Killed by auto 3 2 - 
Subtotal 59 39 96 60 
"Captured! Wy 5 19 - 
Caught in steel trap h 54 11 - 
Found injured \ 3 7 - 
Subtotal 22 15 37 59 

Irving Kassoy has pointed out to me in a letter that this 
‘ gample presumably involves. both migratory and nonmigratory popula- 
tions. With so many of the recoveries emanating from California at 
109 
