Breeding biology of the Spotted Barbtail (Premnoplex brunnescens)
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Abstract
The Spotted Barbtail (Furnariidae) is poorly studied but shows some extreme traits for a tropical passerine. We located and monitored 155 nests to study this species for 7 years in an Andean cloud forest in Venezuela. Spotted Barbtails have an unusually long incubation period of 27.2 ± 0.16 days, as a result of very long (3–6 hr) off-bouts even though both adults incubate. The long off-bouts yield low incubation temperatures for embryos and are associated with proportionally large eggs (21% of adult mass). They also have a long nestling period of 21.67 ± 0.33 days, and a typical tropical brood size of two. The slow growth rate of the typical broods of two is even slower in broods artificially reduced to one young. Nonetheless, the young stay in the nest long enough to achieve wing lengths that approach adult size.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Breeding biology of the Spotted Barbtail (Premnoplex brunnescens) |
| Series title | Wilson Journal of Ornithology |
| DOI | 10.1676/14-011.1 |
| Volume | 126 |
| Issue | 4 |
| Year Published | 2014 |
| Language | English |
| Publisher | Wilson Ornithological Society |
| Publisher location | Lawrence, KS |
| Contributing office(s) | Coop Res Unit Seattle |
| Description | 11 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Wilson Journal of Ornithology |
| First page | 717 |
| Last page | 727 |
| Country | Venezuela |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |