Table 2. Cohen’s d, 95% CIs and achieved statistical power for post-hatching and adult morphological measures (body mass, wing and tarsus length).

Contrast	Hatchlings			Adults
	Cohen’s d	95% CI	Statistical power (1-β)	Cohen’s d	95% CI	Statistical power (1-β)
Body mass
CO-T3	0.22	[−0.70 to 1.09]	0.13	−0.01	[−1.23 to 1.05]	0.05
CO-T4	0.17	[−0.79 to 1.11]	0.11	−0.46	[−1.54 to 0.57]	0.26
CO-T3T4	0.06	[−1.03 to 1.05]	0.07	−0.48	[−1.61 to 0.48]	0.28
T3-T4	−0.09	[−0.81 to 0.66]	0.08	−0.51	[−1.32 to 0.22]	0.36
T3-T3T4	−0.24	[−1.0 to 0.52]	0.17	−0.53	[−1.28 to 0.19]	0.40
T4-T3T4	−0.16	[−0.80 to 0.49]	0.13	−0.01	[−0.66 to 0.65]	0.05
Wing length
CO-T3	−0.41	[−1.33 to 0.36]	0.23	−1.07	[−2.09 to 0.36]	0.67
CO-T4	−0.79	[−1.62 to 0.10]	0.57	−0.72	[−1.52 to 0.20]	0.47
CO-T3T4	−0.56	[−1.31 to 0.13]	0.37	−0.81	[−1.52 to 0.11]	0.56
T3-T4	−0.41	[−1.09 to 0.31]	0.31	0.12	[−0.54 to 0.91]	0.09
T3-T3T4	−0.20	[−0.80 to 0.54]	0.14	0.09	[−0.49 to 0.91]	0.08
T4-T3T4	0.19	[−0.44 to 0.86]	0.15	−0.03	[−0.67 to 0.62]	0.06
Tarsus length
CO-T3	−0.58	[−1.29 to 0.33]	0.33	−0.10	[−1.25 to 1.08]	0.07
CO-T4	−0.88	[−1.93 to 0.08]	0.61	−0.67	[−1.59 to 0.31]	0.43
CO-T3T4	−0.92	[−2.02 to 0.06]	0.68	−0.78	[−1.73 to 0.09]	0.54
T3-T4	0.01	[−0.91 to 1.02]	0.05	−0.68	[−1.41 to 0.08]	0.53
T3-T3T4	0.05	[−0.91 to 1.07]	0.06	−0.79	[−1.44 to -0.11]	0.67
T4-T3T4	0.06	[−0.69 to 0.79]	0.07	−0.11	[−0.73 to 0.54]	0.10

Note:

95% CIs were calculated by bootstrap resampling with 5,000 resamples. CO = control, T₄ (thyroxine) = injection of T₄, T₃ (triiodothyronine) = injection of T₃, T₃T₄ = injection of T₃ and T_4.