t niversity of California Publications in Zoology 
 
The four birds whose weights were recorded daily or more frequently 
between April 16 and June 18 furnished many interesting facts which confirm

or supplement those already recited. All four birds were examined on the
date 
of last weighing. Number A181237 (referred to hereafter as no. 37), a female,

was in the poorest condition of any bird in the lot, and in the most ragged

plumage. Number A181266 (no. 66), the other female, appeared more nearly

TABLE 2 
SUMMARY oP WMGHT RzcoDs (IN GRAMS) or' FiIry-THREE GoLN-cRowNE SPARROws 
KEPT Im CAPTVITY AT BRaaKx.mY DURING THE SPRING or 1932 
Num- 
Particulars of weights          ber of Average  Minimum  Maximum 
birds 
Weights of birds trapped between March 1 and 
M arch  10 ............................................................................
 28  28.70  25.00  34.10 
Weights of birds trapped between March 28 and 
A pril  13 ..............................................................................
 25  32.81  27.50  38 .05 
Weights of all birds trapped between March I and 
A pril  13 .............................................................................
 53  30.64  25.00  38.05 
Weights of birds trapped which were weighed at 
tim e  of  release ................................................................
 50  30.76  25.00  38.05 
Weights of birds released on June 12, at time of cap- 
ture  ......................................................................................
 25   31.08  25 .05  37 .60 
Weights of birds released on June 12, at time of re- 
lease ............................... 25            39.58    33.95    46.85

Weights of birds released on July 22, at time of cap- 
ture ......................................................................................
 25  30.43  25.00  38.05 
Weights of birds released on July 22, at time of re- 
lease ....................................................................................
 25   36.42  27.60  44.20 
Weights of all birds when released ................................ 50  38.00
 27.60  46.85 
Gain in weight of birds released on June 12 ................ 25  8.50  1.90
 17.35 
Gain in weight of birds released on July 22 ............... 25  6.00  -4.40
 13.05 
Gain in weight of both lots of birds .............................. 50  7.24
 -4.40  17.35 
Loss in weight of birds released on July 22 ................  2  2.37  .35
 4.40 
normal, although it did weigh less than at the beginning of the test. In
com- 
parison with no. 37, its ovary showed considerably larger ova and its plumage

was in better condition. Number A181267 (no. 67), a male, died on June 18.

Its plumage was in poor condition. The testes were shrunken to three milli-

meters in longest diameter. The fourth bird, number A181235 (no. 35), also

a male, was exceptionally fat and was well covered with feathers. Its testes

measured eight millimeters in longest diameter. 
The most striking revelation of figure 2 upon first examination is the con-

trast in trend of the records of one bird, no. 35, and of the records of
the other 
three, nos. 66, 67, and 37. It seems peculiar that no. 35 should, in spite
of its 
great range of weight through the whole time, maintain a weight far above

that of the three other birds. Only once did its weight fall as low as any
record 
for another of the four: on only one day was its weight less than at the
time 
of capture. 
 
[VOL. 40