Earth & Environmental Sciences
plumage
100%
songbird
89%
molt
88%
carotenoid
80%
immunity
79%
trade-off
8%
animal
8%
pigment
8%
domesticated species
7%
bird
7%
photoprotection
6%
sexual selection
6%
health
5%
immune response
5%
demand
5%
animal species
5%
inoculation
4%
life history
4%
skin
3%
diet
3%
allocation
3%
autumn
3%
blood
3%
experimental study
3%
young
2%
winter
2%
Agriculture & Biology
songbirds
75%
plumage
72%
molting
61%
immunity
57%
carotenoids
54%
color
38%
Carpodacus mexicanus
13%
pigments
6%
animals
5%
artificial selection
5%
bird control
5%
phytohemagglutinin
5%
young animals
4%
sexual selection
4%
immune response
3%
life history
3%
autumn
3%
skin (animal)
3%
injection
2%
winter
2%
birds
2%
blood
2%
diet
2%
testing
1%