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THE WILSON JOURNAL OF ORNITHOLOGY • Vol. 124. No. 3. September 2012 
N 
X 
> 
o 
c 
CD 
3 
cr 
CD 
3 
2 
1 
A** 
cp 
Dp 
.0 0.2 0.4 
0.6 0.8 
i.o 
Ck 
Fk 
•0 0.2 0.4 
0,6 0'8 
1.0 
Ei 
Ai 
Di 
0 0.2 0.4 
0.6 0.8 1 
Time (sec) 
.0 1.2 1.4 
p:* " ,, JTTV Sy “ aD,e typeS between malc ^ay-colored Thrushes during the 2008 breeding season in San Jose. Costa 
Shi/! ? h P shared among the repertoires of males C and D, syllable 'k' is shared between males C and F. and 
- 0 (h A 'rv ar n d 7 n y ma E ’ A ' and D ' Mcan Spectrogram correlation values are: Cp-Dp - 0.86, Ck-Fk = 0.76. Ei-Ai 
- 0.66, Ai-Di = 0.70, and Ei-Di = 0.69. 
Syllable Repertoire Size.—We printed spectro¬ 
grams of the recordings using a fixed scale and 
visually identified each syllable type to produce a 
cataiogue of the repertoires of all males. Clear 
* terences 111 frequency-temporal pattern of 
the different syllables facilitated the visual 
classification process (Fig. |). Wc measured 
repertoire size as the total number of different 
syllable types in the songs of a given male. We 
also constructed cumulative plots of new syllable 
types per every 10 recorded syllables to verify that 
we had obtained complete repertoires. 
Syllable Sharing .—We based identification ol 
shared syllables between males by the similarity 
ol the frequency-temporal patterns (Fig. 2) using 
a similar procedure as other studies analyzing 
