Got an interesting question, thought I would share with all.
We have banded 18 Ruby-crowned Kinglets in the past year; 9 Golden-crowned
Kinglets; and 3 Winter Wrens.
RCKI (n=18) ave wt- 6.31 g [range 5.7-7.6 g]
GCKI (n=9) ave wt- 5.77 g [range 5.5-6.4 g]
WIWR (n=3) ave wt- 8.8 g [range 7.6-9.7 g]
Another interesting fact-- both kinglet species tail lengths averaged 42
mm; the WIWRs averaged 26.7mm--hows that for a stumpy tail!!
Dave