FOOD HABITS OF SHOAL-WATER DUCKS. 
d1 
TABLE I.—Items of vegetable food identified in the stomachs of the ducks treated in this 
bulletin and the number of stomachs in which found—Continued. 
Kind of food. 
Total number of stomachs examined : 
SUBKINGDOM SPERMATOPHYTA—Continued. 
Cyperacee. 
lWimidentiliedssed sesteeae aaeraseen- oo 
Cyperus esculentus (chufa) 
Cy penusispe (CUilta sansa ee ose ae See 
Dichromena sp 
Dulichium arundinaceum (three-ways sedge) . - - 
Elcochants'sp-. (Spike rush) == 2. 2-2-5522252-- += 
HUMGTISUUSS Peas. sacs ee cin sis ais aoe alee om & 
Scirpus paucifiorus (few-flowered bulrush) 
Scirpus americanus (three-square) 
Scirpus paludosus (prairie bulrush) 
Scirpus robustus (Salt-marsh bulrush) - .....-.- 
Scirpus fluviatilis (river bulrush) 
Scirpus cubensis (bulrush) 
Scirpus validus (great bulrush) 
Scirpus sp. (unidentified bulrushes) 
Fuirena squarrosa (umbrella-grass) 
Fuirena sp. (umbrella-grass).....--..---------- 
Rhynchospora corniculata (beaked rush) 
Rhynchospora sp. (beaked rush) 
Cladiwm effuswm (Saw graSS)......------------- 
Cladium mariscoides (twig-rush) 
Scleria sp. (nut rush) 
Carex decomposita (panicled sedge) 
Carex lupuliformis (hop sedge) 
- Carex sp. (Sedge) 
Araceae. 
Peltandra virginica (arrow-arum ) 
Symplocar pus foetidus (Skunk cabbage) 
Lemnaceae. 
Spirodela polyrhiza (big duckweed) 
eswrcvere se sees 
Lemna minor (small duckweed). -----------.-- 
Lemna sp. (unidentified duckweeds) 
Eriocaulaceae. 
Eriocaulon decangulare (pipewort)....-.--. BR 
Eriocaulon sp=(pipewort)..--...-...:---------- 
Pontederiaceae. 
Pontederia cordata (pickerel weed) 
Heteranthera dubia (water star-grass) 
Heteranthera sp. (mud plantain) 
Juncaceae. 7 
UNCUS Sea (MOL MUSD ams cesee ao .e ose: = 
Liliaceae. 
Polygonatum biflorum (hairy Sclomon’s-seal)... 
ELE SD <(@LCOMDIIAP) = ss 52-5 skews ese : 
Haemodoraceae. 
Gyrotheca tinctoria (red-root) 
Piperaceae. 
Gad- | Bald- 
wall. | pate. 
417 255 
43 20 
31 5 
13 19 
5 4 
150 37 
Ort 12 
DAS aa oa ee 
2 5 
Dil eee ae 
47 24 
68 5 
Siamese 1 
eH oes ae 
8 12 
17 3 
Ene 1 
Gees 
Green- | Blue- | Cinna-| pj, 
Winged | winged! mon fail 
teal. teal. | teal. 
653 319 4] 790 
50 27 7 47 
48 2 a eee 29 
1 ered Nee ea Ne 
ee tulas ee. ees 
45 33 10 45 
90 40 ne esee 61 
Os ee |e eel ence ae 5 
121 10 3 155 
46 7 12 24 
40 Zeer ee 24 
5 AS a ererrs 3 
TH (ee eee Pease 8 
38 Ds | res tee re ee 
205 184]  17/ 154 
BE eee 1 
Se ESE Gone Eee 1 
1G | ees earees |e ere 7 
4 Daley 8 
83 2 (a eae 103 
8 OV eaneuae 1 
fan ae sea eaeaeeenl Moose 6 
10 s\n eek 2 
62 57 5 19 
44 } 4 PSs 15 
| 
IUD pee ee Nee 8 
Berea ss Sh DS es eer es (es te 
re Tae | eae eae eras soe 1 
DAN Set pial oe ns 2 
