Long-term fitness effects of the early-life environment in a wild bird population

Environmental conditions and experiences during development can have long-term fitness consequences, including a reduction of adulthood survival and reproduction. These long-term fitness consequences may play an important role in shaping the evolution of life history. We tested two hypotheses on the long-term fitness effects of the developmental environment – the silver spoon hypothesis and the internal Predictive Adaptive Response (PAR) hypothesis. We compared the change in annual survival and annual reproductive output with age for adult birds hatched and reared in poor (impacted by anthropogenic noise, and/or high sibling competition) and good (not impacted by anthropogenic noise, and/or low sibling competition) environments. We used a 23-year longitudinal fitness dataset from a wild house sparrow (Passer domesticus) population that was unusually precise due to the isolation of the population. We used a cross-fostering setup to disentangle postnatal environmental effects from prenata..., , , # Long-term fitness effects of the early-life environment in a wild bird population

Dataset DOI: [10.5061/dryad.08kprr5dh](10.5061/dryad.08kprr5dh)

## Description of the data and file structure

The data was collected during 2000-2012 from a wild house sparrow (*Passer domesticus*) population on Lundy Island, UK. The population has been systematically monitored for 23 y for breeding activities and survival status for each bird.

### Files and variables

Empty cells and NA in all files indicate data not available, usually because we were not able to record this information.

#### File: sys_FecundityByBroodSummary.xlsx and sys_FecundityByBroodSummary.csv

**Description:** support data to extract natural history information per brood. The data in the two files are identical, with the .csv version to improve accessibility.

##### Variables

* BroodRef: a unique number to identify each brood
* BroodName: a unique name to identify each brood
* NestboxRef: the nest box where the brood was
* ...,