Bay-breasted Warbler (Dendroica castanea) Science Article 3 abstract The Bay-breasted Warbler is a neotropical migrantsongbird. It is one of 12 species of warbler in thegenus Dendroica that breed in British Columbia(Campbell et al. 2001). No subspecies are recognized(AOU 1957; Cannings 1998). John M. Cooper and Suzanne M. Beauchesne, Accounts and Measures for Managing Identified Wildlife […]
Bay-breasted Warblers Feeding on Fruit: Interspecific Social Facilitation?
Bay-breasted Warbler (Dendroica castanea) Science Article 2 abstract At about 1135 on 4 October 1975 we noticed a Scarlet Tanager (Piranga olwacea) feeding on the fruits of a very large dogwood (Comus florida) about 2 m from the window of our home west of Chapel Hill, North Carolina. Helmut C. Mueller, Bird Banding summer 1976 […]
ENERGY AND WATER BUDGETS OF LARKS IN A LIFE HISTORYPERSPECTIVE: PARENTAL EFFORT VARIES WITH ARIDITY
Bar-tailed Lark (Ammomanes cinctura) Science Article 1 abstract We compared physiological, demographic, and ecological variables of larksto gain insights into life history variation along an aridity gradient, incorporating phylogeneticrelationships in analyses when appropriate. Quantifying field metabolic rate (FMR)and water influx rate (WIR) of parents feeding nestlings as measures of parental effort, wefound that parental FMR […]
The diet of Bar-tailed Godwits Limosa lapponica in the Wadden Sea: Combining visual observations and faeces analyses
Bar-tailed Godwit (Limosa lapponica) Science Article 1 abstract Estimating diet composition of Bar-tailed Godwits Limosa lapponica by visual observations was hampered by large amounts of unidentified prey items. Therefore, additional analyses of faeces were conducted. Overall, 17 prey species were found in the droppings, but only four polychaetes, the Lugworm Arenicola marina, the Estuary Ragworm […]
TRACING NUTRIENT ALLOCATION TO REPRODUCTION INBARROW’S GOLDENEYE
Barrows Goldeneye (Bucephala islandica) Science Article 6 abstract Naturally occurring stable isotopes in foodwebs can be used to determine the relative contributions of endogenous and exogenous nutrients to avian eggs in cases where birds move between isotopically distinct biomes or habitats to breed. We measured 13C and 15N values in somatic muscle tissues and eggs […]
BODY WEIGHT AND FEATHER GROWTH OF MALE BARROW’S GOLDENEYE DURING WING MOLT
Barrows Goldeneye (Bucephala islandica) Science Article 4 abstract We studied the timing, duration, and rate of wing molt of male Barrow’s Goldeneye (Bucephala islandica). The mean daily change in primary feather length was 2.6%, which is consistent with rates reported for other waterfowl species. The mean length of the flightless period was 31 days (range: […]
Processes underlying parental care decisions and creching behaviour: clarification of hypotheses
Barrows Goldeneye (Bucephala islandica) Science Article 5 abstract Processes underlying parental care decisions and creching behaviour: clarification of hypotheses Hannu Poysa and Markku Milonoff, Ann. Zool. Fennici 36: 125-128 Fennici 36: 125-128 Download article download full text (pdf)
A Management Plan for Barrow’s Goldeneye (Bucephala islandica; Eastern population)
Barrows Goldeneye (Bucephala islandica) Science Article 1 abstract The world distribution of Barrow’s Goldeneye (Bucephala islandica) consists of threeseparate populations: 150 000 to 200 000 birds in western North America (Eadie et al 2000),a resident population of 2000 in Iceland (Gardarsson 1978), and approximately 4500 birds ineastern North America (Savard and Dupuis 1999; Robert et […]
Moult characteristics and habitat selection of postbreeding male Barrow’s Goldeneye (Bucephala islandica) in northern Yukon
Barrows Goldeneye (Bucephala islandica) Science Article 2 abstract Moult characteristics and habitat selection of postbreeding male Barrow’s Goldeneye (Bucephala islandica) in northern Yukon van de Wetering, D. E, M.Sc. thesis, Simon Fraser Univ., Burnaby, BC, Canada. Download article download full text (pdf)
Further Evidence of Long-term Pair Bonds in Ducks of the Genus Bucephala
Barrows Goldeneye (Bucephala islandica) Science Article 3 abstract In holarctic ducks, pair formation occurs during the winter or the spring migration, or both, and pair bonds are seasonal, usually lasting until the onset of incubation by the female (McKinney 1986). Because males desert their mates during incubation and leave thebreeding grounds for molting, it has […]