Study
Population ecology of some warblers of northeastern coniferous forests
MacArthur, Robert H.
Ecology, 1958
Five warbler species feeding in the same conifers were watched systematically. Trees were divided into zones by height and by distance from the trunk, and the time each species spent foraging in each zone was recorded, along with feeding behaviour and nesting timing.
- Studied in
- Setophaga
- Sample size
- timed observations of foraging birds in mapped tree zones
The species used the trees differently. Each concentrated its foraging in a distinguishable region — outer new needles near the top, inner branches lower down, and so on — with differences also in feeding movements and breeding timing.
What it means
The authors' reading, and ours. Where they differ, that difference is the point.
How the authors put it
Species that appear to share a habitat may divide it finely enough to reduce competition, which offers an explanation for their coexistence.
How NatureHQ reads it
A foundational study that is regularly asked to carry more than it can. It documents that five warblers use one tree differently, which is real and was new. It does not show that competition produced the difference, because nothing was manipulated — and the divergence could be present for reasons that have nothing to do with the other four species. NatureHQ presents it as the observation it is.
- Observational: no species was removed, so competition is inferred from pattern rather than demonstrated.
- One forest type and one season; overlap between the species was substantial as well as partial.
What this study is used for on NatureHQ
One study can inform several subjects. Here is everywhere this one is cited.
Published by: Wiley journalsPublished in a Wiley journal.
Checked against Crossref on 2026-09-28, and they agree on the title, the authors and the year.
NatureHQ summarises research in its own words and does not reproduce published text. Reviewed 2026-09-04.