A 5 – year nested cohort study (2007 201111 inclusive) at the tertiary level hospitals in Yaounde.
Fixed effects included sampling site, processing day, sex, standard length (SL), and sampling year (nested in site).
The final model included novelty seeking score as the dependent variable, animal identity as the subject variable and age, site, test year nested within site, and age × site interaction as fixed factors.
As above, site, sex, day of dissection and sampling year (nested in site) were included as fixed factors, observer as a random block factor, and standard length as a covariate.
Because nest site selection was influenced by the results of the previous year, nesting location data in 2005 and 2006 were distinguished and models built accordingly.
The Eurasian treecreeper breeds from the age of one year, nesting in tree crevices or behind bark flakes.
The birds have been visitors to the Chinese capital for hundreds of years, nesting in its gatehouses and palace eaves.
There are many retirees who, after working 30 to 40 years, have amassed a "golden years" nest egg.
Hornets go through natural population cycles: in some years nests are scarce, while in others nests can be very common, as may be the case in central China.
For birds sampled in multiple years, nest fate may be correlated within years for that bird but are assumed independent among years.*/.*/
Because models including female and male data did not have the same random effect structure to control for repeated measurements of the same individual each year and across years (female identity nested within year of observation for females and male identity nested within year of observation for males), we decided to treat males and females separately.
