Daily feeding site use of urban pigeons

1984 ◽  
Vol 62 (7) ◽  
pp. 1425-1428 ◽  
Author(s):  
Louis Lefebvre ◽  
Luc-Alain Giraldeau
Keyword(s):  
Individual Differences ◽  
Columba Livia ◽  
Feeding Site ◽  
Daily Feeding ◽  
Daily Schedule ◽  
Site Use

Small flocks (20–40 individuals) of feral rock doves (Columba livia) studied in downtown Montréal follow a bimodal daily schedule of feeding site attendance. The bimodal schedule is achieved through a summation of different usage schedules in the various areas of the sites. The latter schedules are not necessarily bimodal and reveal clear differences between individuals that otherwise share some common feeding areas. The existence of these individual differences has implications for two of the mechanisms by which flock feeding may benefit birds, information centres, and the skill pool.

Daily feeding site selection of cattle and sheep co-grazing a heterogeneous subtropical grassland

2014 ◽  
Vol 161 ◽  
pp. 147-157 ◽  
Author(s):  
Estanislao Martín Díaz Falú ◽  
Miguel Ángel Brizuela ◽  
María Silvia Cid ◽  
Andrés Francisco Cibils ◽  
María Gabriela Cendoya ◽  
...  
Keyword(s):  
Site Selection ◽  
Feeding Site ◽  
Daily Feeding ◽  
Selection Of ◽  
Feeding Site Selection ◽  
Cattle And Sheep

scholarly journals Sleeping site use of the white-headed langur Trachypithecus leucocephalus: The role of predation risk, territorial defense, and proximity to feeding sites

2011 ◽  
Vol 57 (3) ◽  
pp. 260-268 ◽  
Author(s):  
Dayong Li ◽  
Qihai Zhou ◽  
Xiaoping Tang ◽  
Henglian Huang ◽  
Chengming Huang
Keyword(s):  
Central Area ◽  
Central Place ◽  
Feeding Site ◽  
Trachypithecus Leucocephalus ◽  
Sleeping Site ◽  
First Feeding ◽  
Site Use ◽  
Sleeping Sites ◽  
Contrast Group ◽  
Central Place Forager

Abstract We collected data on sleeping site use from two groups of white-headed langurs Trachypithecus leucocephalus living in Fusui Nature Reserve, China between August 2007 and July 2008. This information was used to test several hypotheses regarding ultimate causes of sleeping site use in this primate. White-headed langurs slept either in caves (17 sites) or on a cliff ledge (one site). They used all sleeping sites repeatedly, and reused some of them on consecutive nights; three nights was the longest consecutive use of any one sleep site. We suggest that langurs use sleeping sites to make approach and attack by predators difficult, and to increase their own familiarity with a location so as to improve chances for escape. Langurs’ cryptic behaviors with an increased level of vigilance before entering sleeping sites may also help in decreasing the possibility of detection by predators. Group 1 spent more sleeping nights in the central area of their territory than expected; in contrast, group 2 spent more sleeping nights in the periphery of their territory, which overlaps with that of another groups, than expected. The position of sleeping site relative to the last feeding site of the day and the first feeding site of the subsequent morning indicated a strategy closer to that of a multiple central place forager than of a central place forager. These results suggest that territory defense and food access may play an important role in sleeping site use of white-headed langurs.

scholarly journals Group decisions and individual differences: route fidelity predicts flight leadership in homing pigeons ( Columba livia )

2010 ◽  
Vol 7 (1) ◽  
pp. 63-66 ◽  
Author(s):  
Robin Freeman ◽  
Richard Mann ◽  
Tim Guilford ◽  
Dora Biro
Keyword(s):  
Individual Differences ◽  
Individual Variation ◽  
Columba Livia ◽  
Homing Pigeon ◽  
Scientific Interest ◽  
Homing Pigeons ◽  
Collective Decisions ◽  
The Subject ◽  
Leadership Decisions

How social-living animals make collective decisions is currently the subject of intense scientific interest, with increasing focus on the role of individual variation within the group. Previously, we demonstrated that during paired flight in homing pigeons, a fully transitive leadership hierarchy emerges as birds are forced to choose between their own and their partner's habitual routes. This stable hierarchy suggests a role for individual differences mediating leadership decisions within homing pigeon pairs. What these differences are, however, has remained elusive. Using novel quantitative techniques to analyse habitual route structure, we show here that leadership can be predicted from prior route-following fidelity. Birds that are more faithful to their own route when homing alone are more likely to emerge as leaders when homing socially. We discuss how this fidelity may relate to the leadership phenomenon, and propose that leadership may emerge from the interplay between individual route confidence and the dynamics of paired flight.

A Procedure for the Assessment of Individual Differences in Relational Discrimination Behavior in the Pigeon (Columba livia)

2021 ◽  
Author(s):  
Mary Flaim ◽  
Aaron Blaisdell
Keyword(s):  
Individual Differences ◽  
Rule Learning ◽  
Columba Livia ◽  
Intelligence Test ◽  
Abstract Reasoning ◽  
Stimulus Relations ◽  
The Matrix ◽  
Relational Rules ◽  
Relational Control ◽  
Raven's Progressive Matrices

Raven’s progressive matrices (RPM) is a nonverbal intelligence test that examines abstract reasoning by asking subjects to correctly complete a stimulus matrix where transformations between stimuli in the matrix follow one or more relational rules. While this test has been used since 1936, and has been modified to accommodate a variety of humans, this is the first adaptation for non-human animals. We trained pigeons on a task in which the complexity of the rules could increase progressively. Pigeons initially were trained on one rule, and if discrimination reached criterion performance, were tested on novel exemplars to assess relational control. After learning one rule, some pigeons were trained on a second rule, followed by transfer tests. We chose pigeons because of their previous success in abstract and relational rule learning. Pigeons varied in how many rules could be learned and in how well they could transfer learning to novel images, indicating that this test can measure individual differences in learning abstract properties such as stimulus relations. One pigeon successfully learned and transferred two relational rules, and was tested on a matrix combining both rules together. In the future, our modified RPM procedure could be used to investigate abstract reasoning across species.

Wetland Feeding Site Use by White Ibises (Eudocimus albus) Breeding in Coastal South Carolina

1997 ◽  
Vol 20 (2) ◽  
pp. 167 ◽  
Author(s):  
Toni L. De Santo ◽  
James W. Johnston ◽  
Keith L. Bildstein
Keyword(s):  
South Carolina ◽  
Feeding Site ◽  
Eudocimus Albus ◽  
Site Use

Age-related feeding site selection in urban pigeons (Columba livia): experimental evidence of the competition hypothesis

2000 ◽  
Vol 78 (1) ◽  
pp. 144-149 ◽  
Author(s):  
Daniel Sol ◽  
David M Santos ◽  
Mariano Cuadrado
Keyword(s):  
Site Selection ◽  
Columba Livia ◽  
Age Classes ◽  
Feeding Site ◽  
Feeding Sites ◽  
Age Related ◽  
Competition Hypothesis ◽  
Ecological Mechanism ◽  
Free Ranging ◽  
Feeding Site Selection

Although age-specific habitat use has received much attention in recent years, the mechanisms that underlie ecological separation are not well known. This study examined the age-specific feeding site selection and its ecological mechanism in free-ranging Rock doves (Columba livia; referred to as pigeons). The distribution of age-classes at the feeding sites adjusted to a partially truncated distribution as follows: adults were consistently found more often than expected in the most rewarding feeding site, while juveniles were more often found in suboptimal sites. A removal experiment was conducted to determine whether competition accounted for the niche segregation between juvenile and adult pigeons. The reduction in intraspecific competition following removal was accompanied by an increased use of the preferred feeding site by juveniles. However, when the population recovered its initial size through immigration, juveniles were once again more frequently found in the suboptimal site. The proportion of juveniles feeding in each site was related to the total number of birds present; the higher the total number of birds, the higher the percentage of juveniles feeding in the less preferred site. These results support the idea that segregation between age-classes is due to competition by which adults displace juveniles from the richer foraging sites.

The challenge of accounting for individual differences in folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Benjamin C. Ruisch ◽  
Rajen A. Anderson ◽  
David A. Pizarro
Keyword(s):  
Individual Differences ◽  
Individual Variation ◽  
Political Ideologies ◽  
Economic Beliefs ◽  
Existing Data

AbstractWe argue that existing data on folk-economic beliefs (FEBs) present challenges to Boyer & Petersen's model. Specifically, the widespread individual variation in endorsement of FEBs casts doubt on the claim that humans are evolutionarily predisposed towards particular economic beliefs. Additionally, the authors' model cannot account for the systematic covariance between certain FEBs, such as those observed in distinct political ideologies.

Individual differences, social attention, and the history of the social motivation hypotheses of autism

2019 ◽  
Vol 42 ◽  
Author(s):  
Peter C. Mundy
Keyword(s):  
Individual Differences ◽  
Early Development ◽  
Emotional Development ◽  
Social Motivation ◽  
Social Attention ◽  
Social Emotional Development ◽  
Social Emotional ◽  
Precise Understanding ◽  
The Social ◽  
History Of

Abstract The stereotype of people with autism as unresponsive or uninterested in other people was prominent in the 1980s. However, this view of autism has steadily given way to recognition of important individual differences in the social-emotional development of affected people and a more precise understanding of the possible role social motivation has in their early development.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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