Agriculture & Biology
Parus major
100%
birds
55%
breeding
31%
geese
29%
climate change
27%
swans
27%
foraging
24%
personality
23%
songbirds
20%
dates (fruit)
19%
Cyanistes caeruleus
17%
nestlings
16%
Lepadidae
16%
migratory birds
15%
phenology
15%
Arctic region
15%
habitats
14%
nests
13%
clutch size
13%
Netherlands
13%
breeding sites
13%
fledglings
13%
animal communication
12%
life history
12%
temperature
12%
animals
12%
flight
11%
ecology
11%
Operophtera brumata
11%
eggs
10%
gender
10%
herbivores
10%
Ficedula hypoleuca
10%
reproductive success
9%
winter
9%
Limosa limosa
9%
chicks
9%
Anas platyrhynchos
9%
breeding season
9%
wintering grounds
9%
Cygnus columbianus
9%
oviposition
9%
environmental factors
9%
stopover sites
8%
wild birds
8%
demographic statistics
8%
insect larvae
7%
Branta
7%
migratory behavior
7%
plasticity
7%
prediction
7%
feathers
7%
waterfowl
7%
molting
7%
population dynamics
7%
predators
6%
natural selection
6%
food availability
6%
climate
6%
Haematopus
6%
DNA methylation
6%
Calidris canutus
6%
water birds
6%
testing
6%
organisms
6%
global warming
6%
Chiroptera
5%
genetic variation
5%
Stuckenia pectinata
5%
heritability
5%
tubers
5%
Taeniopygia guttata
5%
Stercorariidae
5%
hatching
5%
predation
5%
Luscinia
5%
population size
5%
paternity
5%
autumn
5%
stable isotopes
5%
photoperiod
5%
Anser
5%
phenotypic plasticity
5%
energy
5%
genomics
5%
body condition
5%
seed dispersal
5%
Earth & Environmental Sciences
bird
58%
breeding
39%
fitness
24%
laying date
18%
egg
18%
food
17%
songbird
17%
nestling
16%
passerine
16%
clutch size
16%
reproductive success
16%
nest
15%
phenology
14%
stopover
14%
effect
14%
rate
14%
climate change
13%
animal
13%
song
13%
migratory bird
11%
habitat
11%
winter
10%
herbivore
10%
breeding site
10%
tuber
9%
wader
9%
caterpillar
9%
density dependence
9%
cost
8%
ecology
8%
temperature
8%
life history
8%
fledging
7%
body mass
7%
flight
7%
parental care
7%
insect
7%
paternity
7%
heritability
7%
molt
7%
feather
6%
diet
6%
resource
6%
gene
6%
wild population
6%
predator
6%
individual variation
6%
sexual conflict
6%
plumage
5%
food availability
5%
energy
5%
population dynamics
5%
moth
5%
body condition
5%
decision
5%
genetic variation
5%
hatching
5%
bat
5%
waterfowl
5%
energetics
5%
genomics
5%
expenditure
5%
sexual selection
5%
brood size
5%
herbivory
5%
methylation
5%
hatching date
5%
sex ratio
5%
environmental conditions
5%
seed
5%
Medicine & Life Sciences
Birds
43%
Breeding
19%
Climate Change
17%
Songbirds
17%
Population
13%
Personality
10%
Reproduction
10%
Temperature
9%
Light
8%
Ecology
7%
Geese
6%
Ecosystem
6%
Animals
6%
Exploratory Behavior
5%
Netherlands
5%
Clutch Size
5%
Climate
5%
Ovum
5%
Influenza in Birds
5%