2  eBird Trends Data Products

The eBird Trends Data Products provide estimates of trends in relative abundance based on eBird data. Trend estimates are made on a 27 km by 27 km grid for a single season per species (breeding, non-breeding, or resident). For further details on the methodology used to estimate these trends consult the associated paper:

Fink, D., Johnston, A., Strimas-Mackey, M., Auer, T., Hochachka, W. M., Ligocki, S., Oldham Jaromczyk, L., Robinson, O., Wood, C., Kelling, S., & Rodewald, A. D. (2023). A Double machine learning trend model for citizen science data. Methods in Ecology and Evolution, 00, 1–14. https://doi.org/10.1111/2041-210X.14186

This lesson will introduce you to the eBird Trends Data Products. We will demonstrate how to download trends data, load the data into R, and use it to estimate regional trends and multi-species trends. Let’s start by loading the packages we’ll use throughout this lesson

library(dplyr)
library(ggplot2)
library(sf)
library(terra)
library(ebirdst)