Results
Our literature search produced 1450 publications. Based on an initial
TRF selection (n = 155), we extracted 36 references with TRF values not
corrected for an associated variable such as body mass or age. We added
two unpublished TRF data measurements obtained from colleagues (also
from blood, see ESM 1 and 2). We ended with 53 species identified with
mean adult TRF values (among 38 studies, some reported more than one
species (e.g. (Haussmann et al.,
2003; Tricola et al., 2018;
Whittemore et al., 2019), 29 chick TRF
values and 35 TROC values (including 19 species from
(Tricola et al., 2018)).