A wide range of abiotic and biotic variables leaves most variation in bird nest architecture unexplained

Nests are the locations or containers for offspring, and mediate interactions between offspring and the environment. However, understanding how environmental factors shape the evolution of nest architecture is complicated. In particular, the relative contributions of biotic (e.g., protection from predation) and abiotic (e.g., microclimate maintenance) factors to the evolution of nest architecture have not been clearly quantified, and multiple nest traits, such as their location or shape, are rarely considered together. Here, we use a dataset of 3,685 bird species with complete data across five different nest traits (out of a wider dataset of 10,528 species included in the repository), to characterise a multivariate ‘morphospace’ of nest architecture. We achieve this using ordination methods, namely a principal coordinate analysis. Then, we use all derived axes of variation in nest morphospace and multivariate phylogenetic comparative methods used for geometric data to explore whether ab..., , # Title of Dataset

'A wide range of abiotic and biotic variables leave most variation in bird nest architecture unexplained'

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'A wide range of abiotic and biotic variables leave most variation in bird nest architecture unexplained' submitted to Proc Roy Soc B.

## Description of the data and file structure

Code in the different subrepositories should be run in order of the numbers of subrepositories (01-06).
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All files below need to be included, and correctly named, for the entir...,