Quantifying non-breeding season occupancy patterns and the timing and drivers of autumn migration for a migratory songbird using Doppler radar

Ecography ◽  
2016 ◽  
Vol 39 (10) ◽  
pp. 1017-1024 ◽  
Author(s):  
Andrew J. Laughlin ◽  
Daniel R. Sheldon ◽  
David W. Winkler ◽  
Caz M. Taylor
Keyword(s):  
Breeding Season ◽  
Doppler Radar ◽  
Autumn Migration ◽  
Occupancy Patterns ◽  
Migratory Songbird

Dynamic occupancy models reveal within-breeding season movement up a habitat quality gradient by a migratory songbird

Ecography ◽  
2008 ◽  
Vol 31 (5) ◽  
pp. 592-600 ◽  
Author(s):  
Matthew G. Betts ◽  
Nicholas L. Rodenhouse ◽  
T. Scott Sillett ◽  
Patrick J. Doran ◽  
Richard T. Holmes
Keyword(s):  
Breeding Season ◽  
Habitat Quality ◽  
Occupancy Models ◽  
Migratory Songbird

Orientation-cage experiments with the European Quail during the breeding season and autumn migration

2006 ◽  
Vol 84 (6) ◽  
pp. 887-894 ◽  
Author(s):  
J.D. Rodríguez-Teijeiro ◽  
A. Barroso ◽  
S. Gallego ◽  
M. Puigcerver ◽  
D. Vinyoles
Keyword(s):  
Breeding Season ◽  
Sexual Behaviour ◽  
Autumn Migration ◽  
Controlled Experiments ◽  
Coturnix Coturnix ◽  
Preferred Direction ◽  
Breeding Grounds ◽  
Suitable Habitats ◽  
Migratory Period

The directional movements of the male European Quail, Coturnix coturnix (L., 1758), during the breeding season and autumn migration were studied using Emlen orientation cages. The characteristics and evolution of the habitat in which males were captured and the sexual behaviour shown at capture indicate that these birds move in search of mating partners rather than of suitable habitats. These displacements are known as “gypsy movements” but are better described, as argued in this paper, as “movements in search of females”. A majority of caged birds (59%) showed a preferred direction (α = 238.5°), which coincided almost exactly with that observed in recoveries of ringed birds during autumn migration (α = 251.3°) but not with results from cage experiments during the same migratory period (α = 187.8°). Therefore, we conclude that displacements of the male European Quail, as shown in ringing recoveries, are much more influenced by “movements in search of females” than by migration. These movements are clearly towards the southwest, the males taking short flights towards suitable breeding grounds and driven by river-course habitats. In addition, we confirm that Emlen funnels are suitable for controlled experiments on the orientation of males in demes of European Quail.

Song stability and neighbour recognition in a migratory songbird, the black redstart

Behaviour ◽  
2014 ◽  
Vol 151 (4) ◽  
pp. 435-453 ◽  
Author(s):  
Tudor I. Draganoiu ◽  
Aurélien Moreau ◽  
Lucie Ravaux ◽  
Wim Bonckaert ◽  
Nicolas Mathevon
Keyword(s):  
Breeding Season ◽  
Discrimination Ability ◽  
Return Rates ◽  
Migratory Songbird ◽  
Dear Enemy Effect ◽  
Black Redstart ◽  
Phoenicurus Ochruros ◽  
One Year ◽  
Breeding Seasons

Territorial male songbirds have the ability to discriminate between the songs of their neighbours and those of strangers and for a few species it has been shown that they maintain this ability from one breeding season to the next. To better understand the acoustic basis of this long-term discrimination ability we studied song stability across two breeding seasons in a migratory songbird with high inter-annual return rates and territory stability, the black redstart, Phoenicurus ochruros. Strophe repertoires of 14 males (≥2 years old) were stable from one breeding season to the next and high strophe sharing occurred for males within the same group of houses or hamlets (81%) in contrast to only limited sharing between different hamlets (15%). However, subtle differences exist between the renditions of the same strophe sung by neighbouring males and these differences equally show an inter-annual stability, providing an acoustic basis for long-term discrimination abilities. Playback tests showed the existence of a strong dear-enemy effect: males reacted less aggressively to the familiar, often shared song of a neighbour than to a stranger unshared song and this pattern was maintained when birds returned from migration one year later. We discuss on one side the possible mechanisms leading to the observed patterns of song sharing and on the other side the significance of stable vocal signatures for neighbour recognition.

scholarly journals Review and summary of red-footed falcon (Falco vespertinus) observations during migration periods in Slovakia

2017 ◽  
Vol 11 (1) ◽  
pp. 51-67
Author(s):  
Michal Noga ◽  
Luboš Vadel ◽  
Roman Slobodník
Keyword(s):  
Data Collection ◽  
Breeding Season ◽  
Seasonal Dynamics ◽  
Autumn Migration ◽  
Number Of Individuals ◽  
Falco Vespertinus

Abstract The red-footed falcon (Falco vespertinus) migrates throughout the territory of Slovakia regularly, though it rarely breeds here. In the present paper we have reviewed and summarised its observations between the years 1905–2016, focusing on the spring and autumn migration periods and its occurrence outside the breeding season. In total, we have gathered the data on 799 observations of 3,717 individuals. Considering the unsystematic data collection, the data should be taken with caution and may rather serve for information purposes only. However, they provide useful basic items of information regarding the species’ seasonal dynamics in Slovakia and its phenology, and document the evident increase in the number of individuals observed since 2014.

scholarly journals Ectoparasitism shortens the breeding season in a colonial bird

2015 ◽  
Vol 2 (2) ◽  
pp. 140508 ◽  
Author(s):  
Charles R. Brown ◽  
Mary Bomberger Brown
Keyword(s):  
Breeding Season ◽  
Great Plains ◽  
Blood Feeding ◽  
Temperate Latitude ◽  
Cliff Swallow ◽  
Colonial Bird ◽  
Migratory Songbird ◽  
Colony Site ◽  
Western Great Plains ◽  
Oeciacus Vicarius

When blood-feeding parasites increase seasonally, their deleterious effects may prevent some host species, especially those living in large groups where parasites are numerous, from reproducing later in the summer. Yet the role of parasites in regulating the length of a host's breeding season—and thus the host's opportunity for multiple brooding—has not been systematically investigated. The highly colonial cliff swallow ( Petrochelidon pyrrhonota ), a temperate-latitude migratory songbird in the western Great Plains, USA, typically has a relatively short (eight to nine week) breeding season, with birds rarely nesting late in the summer. Colonies at which ectoparasitic swallow bugs ( Oeciacus vicarius ) were experimentally removed by fumigation were over 45 times more likely to have birds undertake a second round of nesting than were colonies exposed to parasites. Late nesting approximately doubled the length of the breeding season, with some birds raising two broods. Over a 27 year period the percentage of birds engaging in late nesting each year increased at a colony site where parasites were removed annually. This trend could not be explained by changes in group size, climate or nesting phenology during the study. The results suggest that ectoparasitism shortens the cliff swallow's breeding season and probably prevents many individuals from multiple brooding. When this constraint is removed, selection may rapidly favour late nesting.

scholarly journals Plumage brightness predicts non-breeding season territory quality in a long-distance migratory songbird, the American redstartSetophaga ruticilla

2009 ◽  
Vol 40 (1) ◽  
pp. 34-41 ◽  
Author(s):  
Matthew W. Reudink ◽  
Colin E. Studds ◽  
Peter P. Marra ◽  
T. Kurt Kyser ◽  
Laurene M. Ratcliffe
Keyword(s):  
Breeding Season ◽  
Territory Quality ◽  
Long Distance ◽  
Migratory Songbird

Habitat occupancy patterns of a forest dwelling songbird: causes and consequences

2005 ◽  
Vol 83 (10) ◽  
pp. 1297-1305 ◽  
Author(s):  
Patrick J Doran ◽  
Richard T Holmes
Keyword(s):  
Age Structure ◽  
Reproductive Performance ◽  
High Frequency ◽  
Reproductive Output ◽  
Arrival Times ◽  
Dendroica Caerulescens ◽  
Habitat Occupancy ◽  
Abundance Patterns ◽  
Occupancy Patterns ◽  
Migratory Songbird

We examined patterns of habitat use and reproductive performance of a migratory songbird, the black-throated blue warbler (Dendroica caerulescens (Gmelin, 1789)), within a 3160-ha forested landscape. We surveyed 371 sites over a 3-year period. Some sites were never occupied, while others were occupied for 1, 2, or 3 years. For these 3 years we found that warbler abundance increased with frequency of occupancy. Additionally, we found that (i) deciduousness and understory shrub density increased with frequency of occupancy; (ii) in 1 of 3 years, food abundance was higher at the most frequently occupied sites; and (iii) nest predators exhibited predator-specific abundance patterns across occupancy categories. We next used occupancy patterns documented in the first 3 years of the study to predict settlement, age structure, and reproductive performance at a subset of sites in the final year of the study. We found that males settled earlier in the breeding season at sites with a high frequency of occupancy. There were no differences in arrival times of females. Additionally, age structure did not vary for either males or females across sites with different occupancy levels. Although we found no difference in mean reproductive output across sites with different occupancy levels, over 50% of the young produced fledged from territories overlapping the high occupancy sites.

Seasonal reproductive state determines gene expression in the hypothalamus of a latitudinal migratory songbird during the spring and autumn migration

2020 ◽  
Vol 508 ◽  
pp. 110794 ◽  
Author(s):  
Aakansha Sharma ◽  
Subhajit Das ◽  
Ruchi Komal ◽  
Shalie Malik ◽  
Sangeeta Rani ◽  
...  
Keyword(s):  
Gene Expression ◽  
Autumn Migration ◽  
Reproductive State ◽  
Migratory Songbird

scholarly journals Urban residency and leukocyte profiles in a traditionally migratory songbird

2019 ◽  
Vol 6 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Daniel J. Becker ◽  
Elizabeth M. Schultz ◽  
Jonathan W. Atwell ◽  
Ellen D. Ketterson
Keyword(s):  
Breeding Season ◽  
High Elevation ◽  
Urban Residents ◽  
Disease Dynamics ◽  
Urban Habitats ◽  
Migrant Populations ◽  
Energy Demands ◽  
Migratory Songbird ◽  
Induced Changes ◽  
Leukocyte Profiles

Abstract Many animals are shifting migrations in response to human activities. In particular, human-induced changes to climate and habitat (e.g., urbanization) likely facilitate animals becoming year-round residents. Because migration can be energetically expensive, shifts to sedentary behavior could minimize energetic demands incurred and any immunosuppressive effects. Residency in urban habitats could also provide abundant resources and allow sedentary animals to invest more in immunity. However, urban habitats could also expose sedentary animals to novel stressors that counter such benefits. To examine how recent shifts to residency affects physiology in ways that may shape infectious disease dynamics, we analyzed leukocyte profiles of two dark-eyed junco (Junco hyemalis) populations from southern California: the Laguna Mountain population, in which birds breed in high-elevation forests and migrate altitudinally, and the urban University of California San Diego population, which was likely established by overwintering migrants in the 1980s and has since become non-migratory. Over a two-year study of each population’s breeding season, we found no difference in the ratios of heterophils to lymphocytes between populations. However, urban residents had more leukocytes than birds from the altitudinal migrant population. A multivariate analysis suggested urban residents had fewer monocytes, but effect sizes were small. These results suggest no differences in energy demands or stressors between urban resident and altitudinal migrant populations during their breeding season. However, urban residency may confer immunological benefits through anthropogenic resources, which could have important consequences for disease dynamics..

Sign in / Sign up

Export Citation Format

Share Document