Agriculture & Biology
Illinois River
100%
waterfowl
84%
Aythya affinis
69%
Anas crecca
66%
river valleys
61%
ducks
57%
wetlands
42%
Mississippi River
37%
reports (publications)
28%
habitats
24%
Anas rubripes
23%
body condition
22%
ecology
21%
foraging
20%
food availability
20%
water birds
20%
autumn
16%
wetland soils
15%
habitat preferences
15%
birds
14%
food choices
14%
eating habits
13%
marshes
11%
Aix sponsa
11%
managers
11%
invertebrates
11%
submerged aquatic plants
11%
wetland management
11%
seeds
10%
lipids
10%
helminths
10%
migratory birds
9%
aerial surveys
9%
body fat
9%
soil
8%
Antigone canadensis
8%
helminthiasis
8%
diet
8%
hemoparasites
8%
intrinsic factors
8%
aquatic plants
7%
Sphaeridiotrema
7%
carrying capacity
7%
rivers
7%
winter
7%
biologists
7%
breeding
7%
aircraft
7%
geese
7%
infection
7%
Earth & Environmental Sciences
wetland
59%
waterfowl
55%
preserve
33%
vegetation
26%
monitoring
17%
energetics
15%
food
14%
body condition
11%
hemoparasite
11%
wildlife
11%
soil
11%
river
10%
food selection
10%
attribute
9%
autumn
9%
easement
9%
energy
8%
natural resource conservation
8%
habitat
7%
valley
7%
seed production
7%
biological characteristics
7%
biomass
6%
art
6%
resource
6%
food availability
6%
invertebrate
5%
infection
5%
indicator
5%
lipid
5%
disturbance
5%
diet
5%
winter
5%
