Runner duckling laying down a lot

[Shannon6696]

Just took on 3 runner ducklings, 2 are 3 weeks old the other hatched 3/4 days after and came out double rhe size! Ive been watching and noticed he/she gets tired very quickly and so lays down or rest on legs rather than standing on feet.. just wordered if anyone knew why and if its okay??

 

[Miss Lydia]

Just replied in your other thread. Cute lil Runners