Presence of Wood Thrushes at a Nest Does Not Deter Parasitism by Brown-headed Cowbirds

2007 ◽  
Vol 119 (3) ◽  
pp. 490-493 ◽  
Author(s):  
Lyle E. Friesen ◽  
Colin Zantinge ◽  
Holly Britton
Keyword(s):  
Wood Thrushes

Triple Brooding by Southern Ontario Wood Thrushes

2001 ◽  
Vol 113 (2) ◽  
pp. 237-239 ◽  
Author(s):  
Lyle E. Friesen ◽  
Michael D. Cadman ◽  
Martha L. Allen
Keyword(s):  
Southern Ontario ◽  
Wood Thrushes

scholarly journals Estimating Origins of Three Species of Neotropical Migrant Songbirds at a Gulf Coast Stopover Site: Combining Stable Isotope and Gis Tools

The Condor ◽  
2007 ◽  
Vol 109 (2) ◽  
pp. 256-267 ◽  
Author(s):  
Keith A. Hobson ◽  
Steve Van Wilgenburg ◽  
Leonard I. Wassenaar ◽  
Frank Moore ◽  
Jeffrey Farrington
Keyword(s):  
North America ◽  
North American ◽  
Gulf Coast ◽  
Conservation Priorities ◽  
Stopover Site ◽  
Avian Migration ◽  
The North ◽  
Gis Tools ◽  
Migrating Birds ◽  
Wood Thrushes

AbstractMeasurement of stable-hydrogen isotopes (δD) in feathers of migrating birds can provide information on where feathers were grown in North America, at least to an approximate band of latitude. This approach has greatly increased our ability to investigate aspects of avian migration and stopover ecology, since origins of unmarked individuals at migration stopover sites can be estimated for the first time. However, few studies have explored the power of combining isotope measurements with geographic information system (GIS) methods. We measured δD values in feathers of hatching-year (HY) Swainson's Thrushes (Catharus ustulatus; n  =  60), Wood Thrushes (Hylocichla mustelina; n  =  113), and Gray Catbirds (Dumetella carolinensis; n  =  158) at Ft. Morgan Peninsula, Alabama (30°10′N, 88°00′W), a migration stopover site along the Gulf coast. By applying an elevation-corrected hydrogen isotope basemap for birds in North America, we derived a GIS surface depicting expected feather δD values across the continent. We then used GIS to constrain the possible origins of the sampled populations by considering only values falling within the North American breeding ranges of the species. We depicted likely origins of migrating birds by the 50% and 75% tolerance limits of the data. Our GIS analysis indicated that our captured populations represented much-reduced regions of possible origin based on the North American breeding distributions. Gradients in abundance data from the North American Breeding Bird Survey (BBS) allowed us to further narrow possible origins within isotopic boundaries for Wood Thrushes and Gray Catbirds. This exercise provided a means by which priority regions and habitats could be assessed at large continental scales based on actual productivity. We suggest the combination of isotopic and GIS tools provides a powerful means to derive conservation priorities and to investigate key factors involved in the ecology of avian migration and stopover.

scholarly journals Wood Thrush Movements and Habitat Use: Effects of Forest Management for Red-Cockaded Woodpeckers

The Auk ◽  
2002 ◽  
Vol 119 (1) ◽  
pp. 109-124 ◽  
Author(s):  
Jason D. Lang ◽  
Larkin A. Powell ◽  
David G. Krementz ◽  
Michael J. Conroy
Keyword(s):  
Habitat Use ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Small Scale ◽  
Picoides Borealis ◽  
Adult Males ◽  
Hylocichla Mustelina ◽  
Wood Thrush ◽  
Dispersal Distances ◽  
Wood Thrushes

Abstract We monitored adult and juvenile breeding-season movements and habitat use of radio-tagged Wood Thrushes (Hylocichla mustelina) at the Piedmont National Wildlife Refuge, central Georgia, USA. We investigated the effects that management for Red-cockaded Woodpeckers (Picoides borealis), thinning and burning >30 year old loblolly pine (Pinus taeda) habitat, had on Wood Thrushes, a ground-foraging and midstory-nesting species. Adult Wood Thrush pairs regularly moved long distances between nesting attempts (range 1 to 17,388 m). The only experimental effect we found on adult movements was a decrease in weekly emigration rates (Ψ) from thinned and burned compartments after silvicultural management. Adult males preferred riparian hardwoods with sparse to moderate cover and those preferences increased following management. Juveniles remained near their nest site (x̄ = 177 m, SE = 113) for an average 24 days (SE = 6.3), and then dispersed a mean 2,189 m (SE = 342). Before dispersal, juveniles preferred upland hardwood–pine mixed habitat (P < 0.05) with moderate overstory cover (P < 0.05). We found no management effects on dispersal distances or predispersal habitat use. However, juveniles from thinned and burned compartments dispersed to hardwood habitats with dense cover, whereas birds from control compartments dispersed to pine-dominated habitats with sparse cover. All juveniles dispersed to areas with habitat similar to what they used before dispersal. Small-scale thinning and burning for Red-cockaded Woodpeckers may have had little effect on Wood Thrush habitat use and movements because typical movements were often larger than the scale (stand or compartment) targeted for management.

Homing behavior of wood thrushes (Hylocichla mustelina)

1984 ◽  
Vol 15 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Kenneth P. Able ◽  
William F. Gergits ◽  
Jeffrey D. Cherry ◽  
Scott B. Terrill
Keyword(s):  
Hylocichla Mustelina ◽  
Homing Behavior ◽  
Wood Thrushes

Song learning in the wood thrush

1987 ◽  
Vol 65 (4) ◽  
pp. 1038-1042 ◽  
Author(s):  
Carl L. Whitney ◽  
Joan Miller
Keyword(s):  
Song Learning ◽  
Hylocichla Mustelina ◽  
Wood Thrush ◽  
Young Males ◽  
The Third ◽  
Structural Types ◽  
Wood Thrushes

A typical wood thrush (Hylocichla mustelina) song has three phrases. The first (A) is a series of low pitched sounds, the second (B) consists of loud flutelike notes, and the third (C) is usually a trill. Males have repertoires of two to eight different B phrases, which they use in different songs. In a previous study, males reared in isolation of adult song developed songs that were normal except for the structure of the B phrases. We tutored young males (at age 20–80 days) with recorded B phrases. The phrases were of four previously defined structural types, with four variants of each type, giving a total of 16 phrases. The variants of each type differed only in frequency (Hz). The objectives of the experiment were to determine (i) if wood thrushes copy the structure of B phrases that they hear as juveniles, and (ii) if they copy selectively in such a way as to develop repertoires of highly contrasting phrases. Results were obtained for five males. The B phrase repertoires developed by four subjects consisted entirely of phrases (N = 17) copied from the tutor tape. The repertoire of the fifth subject was of phrases (N = 4) that appeared not to be copied. The males that copied from the tutor tape showed no tendency to develop repertoires of highly contrasting B phrases. Three of the four males developed multiple versions of one or more phrase types, while ignoring other types, and in some cases these versions were very similar in frequency and other details of structure.

Effects of Forest Patch Size on Nesting Success of Wood Thrushes

The Auk ◽  
1995 ◽  
Vol 112 (1) ◽  
pp. 146-155 ◽  
Author(s):  
Jeffrey P. Hoover ◽  
Margaret C. Brittingham ◽  
Laurie J. Goodrich
Keyword(s):  
Patch Size ◽  
Nesting Success ◽  
Forest Patch ◽  
Wood Thrushes

scholarly journals A Productivity Model for Parasitized, Multibrooded Songbirds

The Condor ◽  
2006 ◽  
Vol 108 (2) ◽  
pp. 292-300 ◽  
Author(s):  
Larkin A. Powell ◽  
Melinda G. Knutson
Keyword(s):  
Simulation Model ◽  
Field Studies ◽  
Hylocichla Mustelina ◽  
Wood Thrush ◽  
Driftless Area ◽  
Annual Productivity ◽  
American Redstarts ◽  
Complex Life History ◽  
Species Specific ◽  
Wood Thrushes

Abstract We present an enhancement of a simulation model to predict annual productivity for Wood Thrushes (Hylocichla mustelina) and American Redstarts (Setophaga ruticilla); the model includes effects of Brown-headed Cowbird (Molothrus ater) parasitism. We used species-specific data from the Driftless Area Ecoregion of Wisconsin, Minnesota, and Iowa to parameterize the model as a case study. The simulation model predicted annual productivity of 2.03 ± 1.60 SD for Wood Thrushes and 1.56 ± 1.31 SD for American Redstarts. Our sensitivity analysis showed that high parasitism lowered Wood Thrush annual productivity more than American Redstart productivity, even though parasitism affected individual nests of redstarts more severely. Annual productivity predictions are valuable for habitat managers, but productivity is not easily obtained from field studies. Our model provides a useful means of integrating complex life history parameters to predict productivity for songbirds that experience nest parasitism.

scholarly journals Effects of post-breeding moult and energetic condition on timing of songbird migration into the tropics

2010 ◽  
Vol 278 (1702) ◽  
pp. 131-137 ◽  
Author(s):  
Bridget J. M. Stutchbury ◽  
Elizabeth A. Gow ◽  
Tyler Done ◽  
Maggie MacPherson ◽  
James W. Fox ◽  
...  
Keyword(s):  
Light Level ◽  
Hylocichla Mustelina ◽  
Energetic Condition ◽  
Territory Acquisition ◽  
Breeding Grounds ◽  
High Reproductive Effort ◽  
Carry Over ◽  
The Tropics ◽  
Songbird Migration ◽  
Wood Thrushes

Each autumn billions of songbirds migrate between the temperate zone and tropics, but little is known about how events on the breeding grounds affect migration to the tropics. Here, we use light level geolocators to track the autumn migration of wood thrushes Hylocichla mustelina and test for the first time if late moult and poor physiological condition prior to migration delays arrival on the winter territory. Late nesting thrushes postponed feather moult, and birds with less advanced moult in August were significantly farther north on 10 October while en route to the tropics. Individuals in relatively poor energetic condition in August (high β-Hydroxybutyrate, low triglyceride, narrow feather growth bars) passed into the tropics significantly later in October. However, late moult and poor pre-migratory condition did not result in late arrival on the winter territory because stopover duration was highly variable late in migration. Although carry-over effects from the winter territory to spring migration may be strong in migratory songbirds, our study suggests that high reproductive effort late in the season does not impose time constraints that delay winter territory acquisition.

Postfledging Dispersal, Habitat Use, and Home-Range Size of Juvenile Wood Thrushes

The Auk ◽  
1998 ◽  
Vol 115 (2) ◽  
pp. 349-358 ◽  
Author(s):  
Angela D. Anders ◽  
John Faaborg ◽  
Frank R. Thompson,
Keyword(s):  
Home Range ◽  
Habitat Use ◽  
Juvenile Wood ◽  
Home Range Size ◽  
Range Size ◽  
Wood Thrushes
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