The importance of nighttime length to latitudinal variation in avian incubation attentiveness

Helen Sofaer, Lauren Nagle, Scott Sillett, Jongmin Yoon & Cameron Ghalambor
Avian incubation provides an opportunity to test how parental behavior and ecological conditions interact to shape variation in offspring traits along geographic gradients. In particular, the duration of the incubation period is shorter at higher latitudes, but the degree to which this pattern arises from genetic divergence in rates of growth and development versus from parentally-mediated variation in egg temperatures is controversial. At higher latitudes parents have higher daytime incubation attentiveness, i.e., they spend a...
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3 downloads reported since publication in 2020.

These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
What does this mean?