352 PROCEEDINGS OF THE ACADEMY OF {June, 
General Summary: All species of birds.\— 
Ac- | Re- Disre-| Accepted and | Accepted and 
cepted jected garded rejected. | disregarded. 
““Warningly colored ”’ species | 137+ | 30 | 23 | A31 R 10+ Al |} D1 
Others “specially defended” | 97 16+ 3 10 5 | 4 2+ 
“Non-protected”’ species........ 152 15+ | 1 33.) 16 4 3 
Accepted, rejected, Disregarded 
and disregarded. | and rejected. 
“Warningly colored” species..........0..0.0.0:0c0000- AO ! Ro | DO’ D3| R83 
Others “‘specially defended”’... J 0 0 0 | 1 3 
“Non-protected ” species........0...0..0ccccceeeee | 24+ 4 5 0 | 0 
Totals.— : 
| Ac- Re | Dis Percent-| Poe 
"cepted. | jected. regarded! 28¢ , , age Cis 
| Pees | > Fee rejected..regarded. 
“‘Warningly colored” species .... 1694+ | 43+ | 27 17.99 11.29 
Others “specially defended”’.... ..'. 111 24 6+ 17.02 | 4.25 
“Non-protected”’ species.............. | 2138+ 52+ | 9 18.97 : 3.28 
It appears from this final summary that Judd’s captive birds 
rejected practically the same proportion of the ‘non-protected”’ 
species offered them as of the “specially protected” group. The 
result, therefore, is quite different from that reached in some other 
series of experiments. Although it harmonizes with what we believe 
is the average influence of predaceous animals, as a whole, upon their 
prey, z.e., an indiscriminate one, it is no more worthy of respect 
than other experimental results, for the behavior of the animals 
experimented with did not correspond with the natural habits of 
their species. This is amply shown by the cases (a few not noted) 
in which the birds would not eat articles of food that have been 
found in the stomachs of wild individuals of the same species. 
This is more than 38 per cent. of all the items (not specimens) 
offered that were either disregarded or rejected; if so large a pro- 
portion of the experimental results are manifestly untrustworthy, 
the only safe course is to place reliance in none of them. 
"Includes Buteo platypterus, Archilochus colubris, Passer domesticus, Junco 
hyemalis, Zonotrichia albicollis, and Toxostoma rufum, for which no summaries 
were presented in previous pages. 
