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Seasonal and Interspecific Variation in Frugivory by a Mixed Resident-Migrant Overwintering Songbird Community

Journal Article · · Diversity
DOI:https://doi.org/10.3390/d13070314· OSTI ID:1848172
 [1];  [2];  [3];  [4];  [5]
  1. Univ. of Rhode Island, Kingston, RI (United States). Dept. of Natural Resource Science; Great Hollow Nature Preserve and Ecological Research Center, New Fairfield, CT (United States); Univ. of Rhode Island, Kingston, RI (United States)
  2. Univ. of Florida, Gainesville, FL (United States). Dept. of Biology; Washington Department of Fish and Wildlife, Olympia, WA (United States). Wildlife Research Division
  3. Univ. of Rhode Island, Kingston, RI (United States). Dept. of Natural Resource Science; U.S Fish & Wildlife Service, Athens, GA (United States). National Wildlife Refuge System. Inventory and Monitoring Branch
  4. Univ. of Rhode Island, Kingston, RI (United States). Dept. of Natural Resource Science
  5. National Science Foundation, Alexandria, VA (United States). Division of Environmental Biology. Population and Community Ecology Cluster
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Many temperate passerine bird species switch from diets of mostly invertebrates in the spring and summer to diets that include fruit and seeds in the fall and winter. However, relatively few studies have quantified diet composition or the extent of seasonal shifts during the non-breeding period, particularly among species and across communities with both residents and migrants. We measured carbon and nitrogen stable isotope values in food items (fruits, C3 and C4 seeds, and insects from various trophic levels and plant communities) and in multiple tissues (feathers and plasma/whole blood) from 11 species of songbirds wintering in the southeastern U.S. We combined these diet and tissue values with empirically derived discrimination factors and used concentration-dependent mixing models to quantify seasonal diet shifts. We also validated mixing model results with data from fecal samples. Diets in this bird community, as delineated N and C isotopic space, diverged in the fall and winter relative to the summer as consumption of fruits and seeds increased. Across this songbird community, estimated contributions of fruit to plasma/whole blood increased from 16.2 ± 7.5% in the fall (mean ± SD; range: 4–26%) to 21.7 ± 10.3% (range: 9–37%) in the winter, while contributions of seeds increased from 29.4 ± 2.6% (range: 28–32%) in the fall to 36.6 ± 4.8% (range: 32–42%) in the winter. Fecal data showed qualitatively similar trends to mixing models, but consistently estimated higher contributions of fruit. Our work indicates that fruits and seeds constitute substantial sources of sustenance for non-breeding songbirds, there is considerable separation of resource use among species in the fall and winter, and fecal estimates of contributions to songbird tissues should be interpreted cautiously.
Research Organization:
US Dept. of Agriculture (USDA), Washington, DC (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AI09-76SR00056
OSTI ID:
1848172
Journal Information:
Diversity, Journal Name: Diversity Journal Issue: 7 Vol. 13; ISSN DIVEC6; ISSN 1424-2818
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (73)

Savannah River NERP songbird tissue, insect, and fruit isotope database dataset January 2021
Effect of dietary lipid level on lipid passage rate and lipid absorption efficiency in American robins (Turdus migratorius) journal March 1999
Pulsed resource availability changes dietary niche breadth and partitioning between generalist rodent consumers journal August 2019
Long-term patterns of fruit production in five forest types of the South Carolina upper coastal plain journal February 2012
Using Bayesian stable isotope mixing models to estimate wolf diet in a multi-prey ecosystem: Wolf Diet journal March 2012
Weather affects diet composition of rusty blackbirds wintering in suburban landscapes: Winter Diet of Suburban Rusty Blackbirds journal September 2015
How to get fat: nutritional mechanisms of seasonal fat accumulation in migratory songbirds journal January 2002
Effects of elemental composition on the incorporation of dietary nitrogen and carbon isotopic signatures in an omnivorous songbird journal March 2003
Cold temperature increases winter fruit removal rate of a bird-dispersed shrub journal March 2004
Turnover of carbon isotopes in tail hair and breath CO 2 of horses fed an isotopically varied diet journal March 2004
Stable isotopes in breath, blood, feces and feathers can indicate intra-individual changes in the diet of migratory songbirds journal December 2004
The effect of dietary protein quality on nitrogen isotope discrimination in mammals and birds journal March 2005
The effect of cold-induced increased metabolic rate on the rate of 13C and 15N incorporation in house sparrows (Passer domesticus) journal April 2005
Fruit removal rate depends on neighborhood fruit density, frugivore abundance, and spatial context journal December 2013
Assessing seasonal changes in animal diets with stable-isotope analysis of amino acids: a migratory boreal songbird switches diet over its annual cycle journal March 2018
Linking breeding and wintering grounds of neotropical migrant songbirds using stable hydrogen isotopic analysis of feathers journal January 1997
Assimilation efficiency in birds: A function of taxon or food type? journal January 1989
Fruit-eating in brids and its nutritional consequences journal March 1996
Spatial and temporal variation in fruit use by wildlife in a forested landscape journal July 2002
Physiological regulatory networks: ecological roles and evolutionary constraints journal August 2012
The diets of cats, foxes and dingoes in relation to prey availability in the Tanami Desert, Northern Territory journal January 2002
Stable isotope signature of philopatry and dispersal in a migratory songbird journal May 2002
Metabolic Routing of Dietary Nutrients in Birds: Effects of Diet Quality and Macronutrient Composition Revealed Using Stable Isotopes journal May 2006
It Takes Guts (and More) to Eat Fruit: Lessons From Avian Nutritional Ecology journal October 2001
Lilac-Crowned Parrot Diet and Food Resource Availability: Resource Tracking by a Parrot Seed Predator journal February 2001
Level- and scale-dependent habitat selection for resting sites by 2 syntopic Martes species journal September 2017
Geographic variation in growth and phenology of two dominant central US grasses: consequences for climate change journal August 2013
A fruit diet rather than invertebrate diet maintains a robust innate immunity in an omnivorous tropical songbird journal January 2020
Individual–resource networks reveal distinct fruit preferences of selective individuals from a generalist population of the Helmeted Manakin journal November 2019
Nutrition, ecology and nutritional ecology: toward an integrated framework journal February 2009
Temporal and intrapopulation variation in prey choice of wintering geese determined by stable isotope analysis: Diet preferences in Brent geese journal August 2006
Carry-over effects reveal reproductive costs in a long-distance migrant: Parental costs in geese journal June 2010
Incorporating uncertainty and prior information into stable isotope mixing models journal May 2008
Consequences of adaptive behaviour for the structure and dynamics of food webs: Adaptive behaviour in food webs journal October 2010
Global patterns in fruiting seasons journal September 2008
Seasonal diets of insectivorous birds using canopy gaps in a bottomland forest journal March 2007
Seasonal variation in terrestrial resource subsidies influences trophic niche width and overlap in two aquatic snake species: a stable isotope approach journal February 2010
Dietary breadth of frugivorous birds in relation to their feeding strategies in the lowland forests of central Honshu, Japan journal December 2011
Does the proportion of arthropods versus fruit in the diet influence overwintering condition of an omnivorous songbird? journal February 2017
Linking Winter and Summer Events in a Migratory Bird by Using Stable-Carbon Isotopes journal December 1998
Caution on isotopic model use for analyses of consumer diet journal May 2008
Using stable isotopes to track frugivory in migratory passerines journal November 2009
Best practices for use of stable isotope mixing models in food-web studies journal October 2014
Using stable isotopes of plasma, red blood cells, feces, and feathers to assess mature-forest bird diet during the post-fledging period journal January 2020
Isotopic fractionation and turnover in captive Garden Warblers ( Sylvia borin ): implications for delineating dietary and migratory associations in wild passerines journal September 2003
Ecological Physiology of Diet and Digestive Systems journal March 2011
Mechanisms of Maintenance of Species Diversity journal November 2000
Allometry of the Duration of Flight Feather Molt in Birds journal June 2009
Quantifying Inter- and Intra-Population Niche Variability Using Hierarchical Bayesian Stable Isotope Mixing Models journal July 2009
Arctic Small Rodents Have Diverse Diets and Flexible Food Selection journal June 2013
Physiological Ecology journal January 2007
Fruit Abundance and Local Distribution of Wintering Hermit Thrushes (Catharus Guttatus) and Yellow-Rumped Warblers (Dendroica Coronata) in South Carolina journal January 2004
Wintering Yellow-Rumped Warblers (Dendroica Coronata) Track Manipulated Abundance of Myrica Cerifera Fruits journal January 2004
Converting isotope values to diet composition: the use of mixing models journal April 2012
Frugivory by Wintering Hermit Thrush In Louisiana journal December 2005
Movement and Territoriality of Wintering Hermit Thrushes in Southeastern Louisiana journal September 2000
Home-Range Size, Response to Fire, and Habitat Preferences of Wintering Henslow'S Sparrows journal September 2005
Fruit Quality and Consumption by Songbirds During Autumn Migration journal September 2007
Influence of habitat structure and fruit availability on use of a northeastern stopover site by fall songbirds journal December 2013
Mechanistic Analysis of Interspecific Competition Using Foraging Trade-Offs: Implications for duck Assemblages journal February 2008
Recent Bayesian stable-isotope mixing models are highly sensitive to variation in discrimination factors journal June 2011
Constant properties of plant–frugivore networks despite fluctuations in fruit and bird communities in space and time journal June 2013
Assessing Avian Diets Using Stable Isotopes II: Factors Influencing Diet-Tissue Fractionation journal February 1992
Patterns of Frugivory and Energetic Condition in Nearctic Landbirds during Autumn Migration journal August 1997
Competition and Food Selection: Field Tests of a Theory journal June 1985
The Trade-Offs Between Digestion Rate and Efficiency in Warblers and Their Ecological Implications journal October 1995
Permanence and the Assembly of Ecological Communities journal April 1996
Seed Bank Dynamics in a Mediterranean Grassland journal January 1992
Turnover of 13 C in Cellular and Plasma Fractions of Blood: Implications for Nondestructive Sampling in Avian Dietary Studies journal July 1993
Gut Passage of Insects by European Starlings and Comparison with Other Species journal April 1994
Flowering and biomass allocation in U.S. Atlantic coast Spartina alterniflora journal May 2015
A fruit diet rather than invertebrate diet maintains a robust innate immunity in an omnivorous tropical songbird dataset January 2019
Constant properties of plant–frugivore networks despite fluctuations in fruit and bird communities in space and time collection January 2016

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Related Subjects

54 ENVIRONMENTAL SCIENCES
Biodiversity & Conservation
Environmental Sciences & Ecology
diet overlap
diet shifts
frugivory
granivory
isotopic niche
mixing model
overwintering
songbirds
stable isotopes