Contributor
Martin Stervander Media from this contributor Profile
Date
Location
Eastern upland Phylica woodland (restricted access)
Tristan da Cunha, Saint Helena, Ascension, and Tristan da Cunha
Media from this location Illustrated Checklist- Age
- Not specified
- Sex
- Not specified
- Tags
- In-hand
Observation details
This is a typical 'fraseri', i.e. a small-billed upland bird. The bill is relatively thin and pointed with a straight (rather than convex) profile, typical for small-billed birds. Genetically, there is no distinction between lowland small-billed birds (acunhae) and upland small-billed birds ('fraseri') and the only obvious phenotypic difference is that upland birds are more yellow, as can be seen in this individual. However, this is likely just an effect of the different diet, with upland birds eating Nemertea berries, and N. a. acunhae and N. a. 'fraseri' could be synonymized. This bird was trapped, ringed, and sampled for research on the speciation mechanisms within Nesospiza.
Technical information
- Model
- Canon EOS 500D
- ISO
- 100
- Focal length
- 55 mm
- Flash
- Flash did not fire, auto
- f-stop
- f/5.6
- Shutter speed
- 1/250 sec
- Dimensions
- 4752 pixels x 3168 pixels
- Original file size
- 5.34 MB