Trait category	Specific trait	Included in subset	Studies appeared in
Performance/behavior	Number times of righted	X	1
	Fastest time righting	X	1
	Righting response time	X	2
	Tactile response (0/1)		4
	Distance traveled		4
	Time basking/under shelter		4, 18
	Exploratory rate		7
	Thigmotaxis rate		7
	Sprint speed	X	9, 10, 16
	Escape behavior		12, 47
	Dispersal rate/probability	X	13, 19, 20, 21
	Dispersal distance		31
	Swimming endurance	X	14
	Latency to resume normal behavior after predator cue		14
	Time spent moving		18
	Likelihood of seeking refuge		21
	Time spent scratching in new environment		21
	Time active in new environment		21
	Begging duration/loudness/max frequency/rate		24, 26, 35, 36
	Reversal‐to‐prone response	X	35
	Activity		24
	Tonic immobility in response to restraint		26
	Open field trial responses		37
	Maze test responses		37
	Time spent alert/foraging/exploring/hiding		40
	Contribution to care activities		46
Survival	Survival to time point/life history event (e.g., dispersal)	X	1, 6, 17, 22, 46
Mass/size	Mass	X	1, 3, 4, 5, 6, 9, 10, 11, 13, 14, 16, 22, 23, 24, 25, 26, 29, 30, 31, 32, 33, 34, 36, 37, 39, 40, 41, 42, 43, 44, 46
	Total/body length	X	1, 2, 4, 5, 6, 9, 10, 11, 12, 13, 14, 15, 16, 31, 33, 38, 40, 43
	Feather length	X	44
	Tail length	X	42
	Limb/wing length	X	4, 10
	Growth (general, of specific body part)	X	3, 4, 22, 23, 26, 29, 31, 42, 47 8, 9, 10, 17, 25, 30, 32, 39, 40
	Lean dry muscle mass	X	27
	Body condition metric	X	5, 6, 9, 13, 17, 21, 28, 38, 44
Stress response	PHA response (stress)	X	3, 25, 29
	CORT levels (baseline/stress‐induced/CORT in recovery phase)	X	4, 22, 24, 28, 34, 37, 39, 40, 45, 46, 47
	CBG capacity		24
	Stress‐induced blood glucose		37
	ACTH levels		4, 40
Physiology	Hematocrit		3
	fluctuating asymmetry		15
	Antioxidant capacity		23
	Oxidative status		23
	Heterophil/lymphocyte ratio and counts		24, 37, 41
	Breathing rate		24
	Antibody response/T‐cell response		26
	Muscle water/fat content		27
	Wing loading		27
	Enzyme activity		27
	Antibody titer		37, 41
	Immune swelling response		37
	Blood glucose		37
	Organ mass to body mass ratio		40, 41, 44
	fosB mRNA expression/protein levels		40
	Hormone levels		44
	Telomere length/telomerase activity		45, 48
	Mitochondrial content		47
	DNA methylation		47

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