Camouflage using surface disruption: the importance of corners versus edges

Disruptive colouration is a common mode of camouflage used by predators and prey to conceal their body contours. Several studies have noted the importance of edge disruption in breaking up two-dimensional (2D) body outlines, but less is known about how disruptive colouration hinders the detection and recognition of three-dimensional (3D) body shapes. Specifically, in the context of animal camouflage, it is not clear how the location of three-dimensional (3D) surface disruption affects prey detection. In human visual systems, it is known that corners, not edges, of an object are critical for shape processing and contour completion. However, whether corners are also critical for 3D shape recognition in non-human animals has not been investigated. To test this, in Experiment 1, we presented 3D-printed moth-like targets with either corner disruption, edge disruption, or no disruption to wild, free-living birds. We repeated this in Experiment 2 with 2D targets, comprising images matched to E..., , # Data from: Camouflage using 3D surface disruption: the importance of corners versus edges

[https://doi.org/10.1002/ece3.72052](https://doi.org/10.1002/ece3.72052)

## Description of the data and file structure

The attached data (.csv files) and code (R scripts) are for three separate analyses:

1. Analysis of 3D targets (Experiment 1)
2. Analysis of 2D targets (Experiment 2)
3. Analysis of both Experiments 1 & 2 combined

### Files and variables

#### File: Supporting_R_code_3D_survival.R

**Description:** R code for analysing the results of experiment 1 (3D targets).

#### File: BOTHEXPS.csv

**Description:** Survival data for Experiment 1 (3D targets)

##### Variables

* Block: Replicate ID, each block was carried out in a separate part of the woodland
* Treat: Target treatment code (6 treatments)
* Surv_time: Survival time in hours
* Cens: Target censored (1 = taken by bird predator) or not (0 = target present at last check or taken by non-bird predator)
* Year: Whether the exper...,