Abstract
Understanding how home range size varies across seasons can provide insights into how birds respond to changes In resource levels. Yet, seasonal variation in home range size of most Neotropical birds is poorly understood. We recorded locations of color-banded Tropical Kingbirds during four years at a site comprised of cerrado woodland, humid forest, and cattle pasture in the southern Amazon Basin. We found no significant difference in the mean home range size of males (43.0 ± 22.6 ha) and females (45.6 ± 45.5 ha). Although kingbirds had smaller home ranges in the non-breeding season than In the breeding season, differences in home range size were not significant between seasons. We radiotracked nine kingbirds and compared their home range size to that of color-banded birds without radio transmitters. We found no significant difference in the mean home range size of kingbirds determined by telemetry data (41.8 ± 24.0 ha) and those determined by observations of color-banded individuals (43.4 ± 36.3 ha), suggesting that both methods of estimating home range size are roughly equivalent. Accepted 20 November 2009.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 39-46 |
| Number of pages | 8 |
| Journal | Ornitologia Neotropical |
| Volume | 21 |
| Issue number | 1 |
| State | Published - May 21 2010 |
Keywords
- Bolivia
- Cerrado
- Color-banding
- Dispersal
- Radio telemetry
- Seasonality
- Tropical kingbird
- Tyrannus melancholicus