[obol] Sparrow comparison
- From: "Paul Sullivan" <paultsullivan@xxxxxxxxxxxx>
- To: <obol@xxxxxxxxxxxxx>, <cobol@xxxxxxxxxxxxxxxxxxxxx>, <birding@xxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 12 Mar 2015 16:05:53 -0700
Looking at sparrows below our backyard feeders the other day, I was struck
by a size difference that surprised me. It led me to Sibley's Guide.
Here's a list of some of our sparrows:
Golden-crowned Sparrow
White-crowned Sparrow
Fox Sparrow
Song Sparrow
Savannah Sparrow
Am. Tree Sparrow
Harris Sparrow
Vesper Sparrow
Chipping Sparrow
Brewer's Sparrow
Lincoln's Sparrow
Dark-eyed Junco
White-throated Sparrow
And here's a list of their weights in grams (as per Sibley)
10.5 gms
12 gms
17 gms
19 gms
20 gms
20 gms
20 gms
26 gms
26 gms
29 gms
29 gms
32 gms
36 gms
There's more than a three-fold difference in weight across this group. Can
you match the birds in order of their size?
Paul
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