Abundance is the expected number of individuals detected while traveling a 1 kilometer transect for a 1 hour period within a given map pixel.
Explore seasonality by choosing individual months for map display.
Draw and drag a box on the map with the “Draw Boundary” tool to explore an area of interest.
Habitat data not available for this species.
Welcome to BirdVis
Birds are unrivaled indicators of the environment: they respond to environmental cues and changes across a range of spatial and temporal scales, and undergo dramatic migrations linking distant regions of the globe.
Since 2002, eBird has encouraged birdwatchers to contribute hundreds of millions of
bird observations. To study associations between bird populations and the
environment, researchers at the Cornell Lab of Ornithology have linked eBird data
with local land cover features, based on NASA’s MODIS remote sensing imagery.
These models are, for the first time, providing information about abundance and
habitat associations of these populations through the annual-cycle across North
BirdVis is a powerful new tool that enables anyone to visualize, explore, and interact
with the multidimensional output of these models. BirdVis users can compare
trajectories of abundance and habitat associations in user-specified regions for a suite
of migratory North American species. By interactively moving or resizing regions,
users can explore and compare these seasonal dynamics at multiple scales. This novel
information will provide fertile territory to generate and test hypotheses about
habitat associations, migration strategies, and ultimately to plan and coordinate
regional –scale conservation actions across continental extents.
Abundance: Abundance is defined as the expected number of individuals of the
species detected while traveling a 1-kilometer transect for a 1-hour period beginning
at 07:00 within a given map pixel by a single typical eBird participant. For most
species, predictions are currently limited to North and Central America. Some
portions of a species’ overwintering range may fall outside of this extent.
Habitat Information: The relative importance of the MODIS land cover classes are
used to understand habitat use and avoidance. These values are presented using
stacked areas charts. Values above the x-axis are land covers with positive associations
(indicating habitats used by the species) while those below the x-axis indicate negative
associations (indicating habitats avoided by the species). The values represent the
percent contribution of that land cover class to the prediction for the selected region.
Larger values indicate stronger associations (positive and negative) and more
important habitat use and avoidance. Land cover classes without consistent
associations and land cover classes with values less than 1% are not shown, resulting
in total contributions that may sum to less than 100%. Note that all of the relative
importance statistics presented account for variation in detectability associated with