Rapid Effects of an Aggressive Interaction on Dehydroepiandrosterone, Testosterone and Oestradiol Levels in the Male Song Sparrow Brain: a Seasonal Comparison

2016 ◽  
Vol 28 (2) ◽  
Author(s):  
S. A. Heimovics ◽  
N. H. Prior ◽  
C. Ma ◽  
K. K. Soma
Keyword(s):  
Song Sparrow ◽  
Aggressive Interaction ◽  
Male Song

Testing the function of song-matching in birds: responses of eastern male song sparrows Melospiza melodia to partial song-matching

Behaviour ◽  
2008 ◽  
Vol 145 (3) ◽  
pp. 347-363 ◽  
Author(s):  
William Searcy ◽  
Rindy Anderson ◽  
Stephen Nowicki
Keyword(s):  
Average Distance ◽  
Aggressive Response ◽  
Melospiza Melodia ◽  
Song Sparrow ◽  
Song Type ◽  
Eastern Population ◽  
Partial Matching ◽  
Male Song ◽  
Song Sparrows ◽  
Song Types

AbstractSong-matching has been hypothesized to be a signal of aggressive intentions whereby matching an opponent signals that the singer is likely to attack. Theory predicts that an aggressive signal should impose a cost that enforces the signal's reliability. A receiver-dependent cost imposed by the matched bird's aggressive retaliation has been proposed for song-matching. We tested for such a cost for partial song-matching in an eastern population of song sparrows where males lack the shared song types necessary for song type matching, but can perform partial song-matching using shared song segments. We tested aggressive response, as measured by average distance to a playback speaker, to partial-matching songs and non-matching songs. We predicted a stronger aggressive response to partial-matching songs, as has been shown for whole song-matching in western song sparrow populations. The birds in our study responded no differently to partial-matching and non-matching songs. Neither the distance to the playback speaker nor singing responses differed between playback treatments. Our results do not support a receiver-dependent cost to partial song-matching, as would be expected if partial-matching is a direct threat. Instead, we suggest that partial song-matching functions as a signal of attention.

Combined effects of DHEA and fadrozole on aggression and neural VIP immunoreactivity in the non-breeding male song sparrow

2008 ◽  
Vol 53 (1) ◽  
pp. 287-294 ◽  
Author(s):  
Douglas W. Wacker ◽  
Barney A. Schlinger ◽  
John C. Wingfield
Keyword(s):  
Song Sparrow ◽  
Combined Effects ◽  
Male Song

Vocal Mimicry and Interspecific Aggression in Songbirds: Experiments Using White-Crowned Sparrow Imitation of Song Sparrow Song

Behaviour ◽  
1989 ◽  
Vol 109 (3-4) ◽  
pp. 247-257 ◽  
Author(s):  
Clive K. Catchpole ◽  
Luis F. Baptista
Keyword(s):  
Song Learning ◽  
Song Sparrow ◽  
Territorial Male ◽  
Playback Experiments ◽  
Interspecific Aggression ◽  
Male Song ◽  
Vocal Mimicry ◽  
Song Sparrows ◽  
Competition Hypothesis ◽  
Interspecific Response

AbstractA series of playback experiments was carried out to determine whether territorial male song sparrows could discriminate between their own species song, and the same song produced by a white-crowned sparrow. In two out of three measures of response, the males did not discriminate between model and mimic song. In constrast, most males showed no response to control white-crowned sparrow song, although two individuals showed a strong interspecific response. Other examples of interspecific aggression were also detected during the experiments. The results are discussed in relation to recent studies on interspecific song learning and the competition hypothesis of vocal mimicry in songbirds.

A Nest-Building Male Song Sparrow

The Auk ◽  
1937 ◽  
Vol 54 (2) ◽  
pp. 189-191 ◽  
Keyword(s):  
Nest Building ◽  
Song Sparrow ◽  
Male Song

Song Sparrow (Melospiza melodia)

2020 ◽  
Author(s):  
Peter Arcese ◽  
Mark K. Sogge ◽  
Amy B. Marr ◽  
Michael A. Patten
Keyword(s):  
Melospiza Melodia ◽  
Song Sparrow

scholarly journals Activity patterns of the soprano pipistrelle Pipistrellus pygmaeus throughout the year in southern Norway

BMC Zoology ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Karl Frafjord
Keyword(s):  
Activity Patterns ◽  
Late Summer ◽  
Active Season ◽  
Male Song ◽  
Oceanic Climate ◽  
Social Calls ◽  
Southern Norway ◽  
Winter Hibernation ◽  
Small Valley ◽  
Made In

Abstract Background Most temperate bats are regular hibernators in the winter. Knowledge about the length of their active season and how they adjust their nightly activity throughout the season, is critical to conservation. The characteristics of these are likely to vary with climate as well as latitude. This study investigated the flight activity of the soprano pipistrelle Pipistrellus pygmaeus in Frafjord, a small valley in the south-western corner of Norway (58° 50′N 6° 18′E) with an oceanic climate. Results Activity was recorded with an ultrasound recorder throughout April 2018 to June 2019 at one site, with supplemental recordings in March to June 2020, i.e., covering all months of the year. Recordings at other nearby sites were made in the summers (June–August) of 2016, 2017, 2019 and 2020, as well as some of the last days in December 2019 to the first days of January 2020. Overall, soprano pipistrelles were recorded flying in all months of the year, but very few in December–March. Regular activity was recorded from late April or early May until late October, and some recordings were also made in November. The highest numbers of recordings were made in August and September. Social calls, i.e. male song flights, were recorded from April to November, with the vast majority in August and September. Nearly all recordings were made between sunset and sunrise. Conclusions The soprano pipistrelle in this region showed regular activity through 6–7 months of the year. It adjusted its activity to the changing night length throughout the year, closely following sunset and sunrise. It was rarely recorded flying before sunset and almost never after sunrise. Most activity was recorded in the middle of the night, and social calls also followed this trend closely. Harems in late summer and autumn were confirmed in a bat box, which was also used for winter hibernation.

scholarly journals Female song in the Cyprus Wheatear Oenanthe cypriaca

2021 ◽  
Author(s):  
Robert Patchett ◽  
Alexander N. G. Kirschel ◽  
Joanna Robins King ◽  
Patrick Styles ◽  
Will Cresswell
Keyword(s):  
Breeding Season ◽  
Bird Species ◽  
Breeding Period ◽  
Territorial Defence ◽  
Multiple Functions ◽  
Male Song ◽  
Female Song ◽  
Mate Acquisition

AbstractFemale song is widespread across bird species yet rarely reported. Here, we report the first observations and description of female song in the Cyprus Wheatear Oenanthe cypriaca and compare it to male song through the breeding season. Twenty-five percent of colour-ringed females were observed singing at least once, predominantly in April, compared to 71% of males that continued singing through the breeding period. We suggest that female song may have multiple functions in this species, but it may be especially important in territorial defence and mate acquisition.

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