Information transfer during mobbing: call rate is more important than the number of callers in a southern temperate passerine DOI Creative Commons
Gustavo J. Fernández, Mylène Dutour, Mariana E. Carro

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: May 11, 2023

Abstract Many bird species vary their alarm calls according to the level of risk they face and this information can be used by receivers respond mobbing event. Recent studies have also found that number callers play an important role in decision subsequent individuals join a We conducted playback experiment assess if differences calling rate elicit different behavioural responses house wren (Troglodytes aedon chilensis) . broadcast call either one or two individuals, at rates along breeding season. wrens responded more frequently during higher than lower rates. However, focal moved closer speaker when were played back There no response we individuals. These results suggest are element communication danger wren, rather caller number.

Language: Английский

Risk Assessment During Nest Defense Against Three Simulated Predators by Female Northern House Wrens (Troglodytes aedon) DOI Creative Commons

Ross C. Eggleston,

Josephina H. Fornara,

Kyle M. Davis

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(2)

Published: Jan. 31, 2025

Offspring predation is one of the greatest obstacles to an organism's reproductive success, but parents vary in strength their response potential predators. One explanation for this variable investment that defending current offspring has lower future success if predator also capable injuring or killing parent. Northern house wrens (Troglodytes aedon) are cavity-nesting songbirds defend against multiple species nest predators including small mammals, birds prey, and snakes. Here, we used three different decoys: two predators-an eastern chipmunk (Tamias striatus) ratsnake (Pantherophis alleghaniensis)-as well as a both adults-a juvenile Cooper's hawk (Accipiter cooperi)-to elicit defense test whether females use risk assessment modulate antipredator behavior. We found behaviors were not significantly between predators, which posed high nestlings, parents, neither frequently captures adult outside box. However, female never dove at attacked hawk, while they snake decoys. Neighboring from adjacent territories less likely respond more heterospecifics mobbed than decoy. Collectively, these results show varies substantially within among species. Female exhibit plasticity behavior, types way could maximize lifetime fitness risking loss offspring.

Language: Английский

Citations

0
How great tits respond to urgency‐based information in allopatric Southern house wren mobbing calls DOI Creative Commons
Mylène Dutour, Gustavo J. Fernández, Christoph Randler

et al.

Ethology, Journal Year: 2022, Volume and Issue: 128(10-11), P. 676 - 683

Published: Sept. 10, 2022

Abstract Many species of birds use alarm calls to signal information about predators, including the level threat. Previous playback experiments suggest that urgency response towards heterospecific is phylogenetically conserved, notably in Paridae family. Using conducted on European great tits ( Parus major ), we tested whether this perceives mobbing produced by an allopatric non‐Paridae species, Southern house wren Troglodytes aedon bonariae broadcasting with high‐calling rate (high threat) and low‐calling (low threat). We found tend approach loudspeaker during playbacks more often than rate. Female gave rate, whereas there was no significant difference number given males between high‐ rates. Thus, our results suggested perceived message encoded species.

Language: Английский

Citations

8
Information transfer during mobbing: call rate is more important than the number of callers in a southern temperate passerine DOI
Gustavo J. Fernández, Mylène Dutour, Mariana E. Carro

et al.

Behavioral Ecology and Sociobiology, Journal Year: 2023, Volume and Issue: 77(7)

Published: June 28, 2023

Language: Английский

Citations

4
Acoustic signalling and subspecies divergence in two Australasian treecreepers (Climacteridae) DOI Creative Commons

Brendan Doohan

Published: Jan. 1, 2024

Australasian treecreepers have diversified into most woodland habitats throughout Australia, yet little is known about the mechanisms behind this diversification at intra-species level. This thesis explored morphometrics, systematics, acoustics, and behaviour of two treecreeper species (Climacteris picumnus Cormobates leucophaea) to identify potential leading subspecies divergence. The results project identified that geographic isolation, not bird song, responsible for divergence in both species. These provided a better understanding biology C. Co. leucophaea provide valuable insight evolution Australia’s

Language: Английский

Citations

0
Southern House Wren (Troglodytes musculus) DOI
Gustavo J. Fernández, Mariana E. Carro, L. Scott Johnson

et al.

Birds of the World, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Language: Английский

Citations

0
Risk assessment during nest defense against three simulated predators by female northern house wrens (Troglodytes aedon aedon) DOI Creative Commons

Ross C. Eggleston,

Josephina H. Fornara,

Kyle M. Davis

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Feb. 3, 2023

Offspring predation is one of the greatest obstacles to an organisms reproductive success, but parents vary in strength their response potential predators. One explanation for this variable investment that defending current offspring has lower future success if predator also capable injuring or killing parent. House wrens ( Troglodytes aedon ) are cavity-nesting songbirds defend against multiple species nest predators including small mammals, birds prey, and snakes. Here, we used three different decoys: two - eastern chipmunk Tamias striatus ratsnake Pantherophis alleghaniensis as well a both adults juvenile Coopers hawk Accipiter cooperi elicit defense test whether females use risk assessment modulate antipredator behavior. We found behaviors were not significantly between predators, which posed high nestlings, neither frequently captures adult outside box. However, female never dove at attacked while they snake decoys. Neighboring house from adjacent territories less likely respond hawk, more heterospecifics mobbed than decoy. Collectively, these results show varies substantially within among species. Female exhibit plasticity behavior, types way could maximize lifetime fitness risking loss offspring.

Language: Английский

Citations

0
Information transfer during mobbing: call rate is more important than the number of callers in a southern temperate passerine DOI Creative Commons
Gustavo J. Fernández, Mylène Dutour, Mariana E. Carro

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: May 11, 2023

Abstract Many bird species vary their alarm calls according to the level of risk they face and this information can be used by receivers respond mobbing event. Recent studies have also found that number callers play an important role in decision subsequent individuals join a We conducted playback experiment assess if differences calling rate elicit different behavioural responses house wren (Troglodytes aedon chilensis) . broadcast call either one or two individuals, at rates along breeding season. wrens responded more frequently during higher than lower rates. However, focal moved closer speaker when were played back There no response we individuals. These results suggest are element communication danger wren, rather caller number.

Language: Английский

Citations

0