20 
BULLETIN 1359, U. S. DEPARTMENT OF AGRICULTURE 
Table 4. — Material identified in the food of the black-necked stilt as determined from 
the examination of 80 stomachs, and the number of stomachs in which each item 
was found 
Animal Matter 
Crustacea (crabs, shrimps, etc.) 
Cambarus sp. (crawfishes) 
Other crustaceans 
Odonata (dragonflies) 
Dragonfly nymphs 
Ephemerida (Mayflies) 
Ephemeridae (nymphs) 
Orthoptera (grasshoppers, etc.) 
Acridiidae (short-horned grasshoppers) 
Gryllidae (crickets). 
Heteroptera (true bugs) 
Pentatomidae (stink-bugs) 
Miridae (plant bugs) 
Gerris sp. (water-striders) 
Saldasp. (shorebugs) 
Notonecta undulata (back -swimmers) 
Other Notonectidae (back -swimmers) 
Belostoma flumineum (giant water-bug) 
Belostomasp. (giant water-bug) 
Arctocorixa interrupta (water-boatman) 
Other Corixidae (water-boatmen) 
Other heteropterans . 
Trichoptera (caddisflies) 
Caddisfly larvae 
Lepidoptera (butterflies and moths) 
Caterpillars. 
Coleoptera (beetles) 
Cicindela sp. (tiger beetle)... 
Bembidion insulatum 
Bembidion sp 
Other Carabidae (ground beetles) 
Haliplus concolor 
Haliplus sp 
Peltodytes callosus. 
Peltodytes muticus 
Other Haliplidse (crawling water-beetles) 
Coelambus pedalis 
Coelambus sp 
Deronectes striatellus 
Coptotornus obscurus 
Ther monectes ornatieollis 
Dytiscidae (larvae) 
Other Dytiscidae (predacious diving beetles) . 
Helophorus sp. 
Berosus pugnax 
Berosus infuscatus 
Berosus sp 
Tropisternus limbalis 
Tropisternus nimbatus 
Tropisternus californicus 
Tropisternus sp... 
Cercyon sp 
Hydrophilidae (larvae) 
Other Dydrophilidae (water - scavenger 
beetles) 
Animal Matter— Continued 
Coleoptera (beetles)— Continued 
Heterocerus sp 
Heterocerus sp. (larvae) 
Hyperodes sp 
Onychilis nigrirostris 
Bagous mammillatus.- 
Bagous obliquus 
Bagous restrictus 
Other Curculionidae (weevils). 
Sphenophorus ochreus (billbugs) 
Sphenophorus pertinax (billbugs) 
Sphenophorus sp. (billbugs) 
Diptera (flies) 
Limnobiinae (crane flies) (larvae) 
Chironomidse 
Chironomidae (midges) (larvae) 
Culicidas (mosquitoes) (larva? an d pU pse) 
Stratiomyia sp. (larvae) 
Odontomyia sp. (larvae) 
Other Stratiomyiidae (soldier flies, larvae)... 
Syrphidae (flower flies) (larvae) 
Ephydra gracilis (alkali flies) 
Eph5'dra subopaca (alkali flies) Garvae) 
Ephydra sp. (alkali flies) (larvae). 
Other dipterous larvae 
Other dipterans 
Araneida spiders) 
:piders. 
• Pelecypoda (mussels) 
Small bivalves . 
Gastropoda (snails) 
Bittium varium 
Amnicclasp 
Vivipara georgiana 
Physa gyrina. — 
Physa sp 
Planorbis trivolvis 
Planorbissp 
Other snails _. 
Pisces (fishes) 
Cyprinus carpio (carp) 
Centrarchidae (sunfishes) 
Other fishes 
Amphibia (frogs, toads, etc.) 
Frog.... 
Vegetable Matter 
Marsilea sp (pepperwort) 
Potamogeton pectinatus (sago pondweed) 
(seeds) 
Potamogeton pectinatus (leaves) 
Potamogeton sp. (pondweed) 
Scirpus americanus (three-square) 
Scirpus paludosus (bayonet-grass) 
Scirpus sp. (bulrush)... 
Cephalanthus occidentals (buttonbush) 
Vegetable rubbish 
Table 5. — Percentages of principal groups of items in the food of the five shore- 
birds discussed 
Bird 
Num- 
ber of 
stom- 
achs 
Crus- 
tacea 
Odo- 
nata, 
Tri- 
chop- 
tera, 
Ephem- 
erida 
1 
Hem- ! Cole- 
iptera \ optera 
Dip- 
tera 
Mol- 
lusca 
Pisces 
Mis- 
cella- 
neous 
Total 
animal 
food 
Vege- 
table 
food 
Bed phalarope 
36 
155 
106 
67 
80 
33.5 
9.3 
3.6 
8.6 
.5 
27.3 
22.7 
32.8 
43.1 
23.8 
9.7 
------ 
.3 
.8 
7.9 
' 6.8 
9.7 
3.9 
1.8 
14.5 
2.7 
100.0 ! Tr. 
Northern phalarope. . 
Wilson phalarope 
.2 
31. 8 16. 5 
24. 4 20. 1 
5. 9 1 11. 4 
35 32.4 
97. 2 I 2. 8 
93. 3 6. 7 
Avocet 
Black-necked stilt 
.1 
7.5 
65.1 
98.9 
34.9 
1.1 
WASHINGTON ; GOVERNMENT PRINTING OFFICE : 19J5 
