Although
one of the three failed breeders had a mean trip duration (27.1 ±
33.5 h) that was comparable to the mean for breeding birds (22.4 ±
6.5 h), the other two failed breeders had average foraging trips of
93.0 ± 68.6 h and 59.8 ± 59.4 h, which greatly exceeded the
average reported for breeding birds.