TY  - GEN
AU  - Wingfield,John C
AU  - Ramenofsky,Marilyn
AU  - Hegner,Robert E
AU  - Ball,Gregory F
TI  - Whither the challenge hypothesis?
SN  - 1095-6867
PY  - 2021///0323
KW  - Aggression
KW  - physiology
KW  - Animal Migration
KW  - Animals
KW  - Birds
KW  - Ecosystem
KW  - Endocrine System
KW  - Humans
KW  - Insecta
KW  - Male
KW  - Molting
KW  - Sexual Behavior, Animal
KW  - Social Environment
KW  - Species Specificity
KW  - Territoriality
KW  - Testosterone
KW  - metabolism
N1  - Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Review
UR  - https://doi.org/10.1016/j.yhbeh.2019.104588
ER  -