Head to head
White-Breasted Nuthatch vs Red-Breasted Nuthatch
The white-breasted and red-breasted nuthatches share the same habit of climbing down tree trunks headfirst, but they occupy different forest types and have evolved very different ways of defending a nest cavity.
| White-Breasted Nuthatch | Red-Breasted Nuthatch | |
|---|---|---|
| Scientific name | Sitta carolinensis | Sitta canadensis |
| Nest entrance defence | Smeared crushed insects | Sticky conifer resin |
| Preferred forest type | Deciduous and mixed forest | Coniferous forest |
| Range | Most of the US and southern Canada | Canada, northern US, and mountains farther south |
| Seasonal movement | Largely non-migratory | Irrupts during poor cone crop years |
| Call | Nasal, repeated "yank-yank" | Tinny, nasal, tin-horn-like |
| Conservation status | Least Concern | Least Concern |
| Diet | Insectivore | Insectivore |
White-Breasted Nuthatch vs Red-Breasted Nuthatch: common questions
How can you tell a white-breasted nuthatch from a red-breasted nuthatch?
Habitat and range are the quickest clues, since the white-breasted nuthatch favours deciduous and mixed forest across most of the US and southern Canada, while the red-breasted nuthatch sticks to coniferous forest across a range extending from Canada through mountains farther south; their calls also differ, with the white-breasted giving a nasal "yank-yank" and the red-breasted a tinnier, tin-horn-like note.
Why do these two nuthatches defend their nests so differently?
Each species uses the defensive material most available in its own habitat: the white-breasted nuthatch, living among deciduous trees, smears crushed insects around its nest entrance, while the red-breasted nuthatch, living among conifers, instead daubs sticky resin from the very trees surrounding it, in both cases creating a barrier meant to deter squirrels and other intruders.
Which nuthatch is more likely to show up somewhere unexpected?
The red-breasted nuthatch is the one known for irruptions, sometimes moving well outside its usual range during years when conifer cone crops fail across its normal habitat, a pattern the more sedentary white-breasted nuthatch does not typically show.