scholarly journals Aggression in Flocks of Foraging Shorebirds During Spring Stopover at Delaware Bay, USA

Waterbirds ◽  
2018 ◽  
Vol 41 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Ivana Novcic
Keyword(s):  
Delaware Bay ◽  
Spring Stopover

Shorebird Predation on Eggs of Horseshoe Crabs during Spring Stopover on Delaware Bay

The Auk ◽  
1993 ◽  
Vol 110 (4) ◽  
pp. 927-930 ◽  
Author(s):  
Gonzalo Castro ◽  
J. P. Myers
Keyword(s):  
Delaware Bay ◽  
Horseshoe Crabs ◽  
Spring Stopover

Effect of forager density on feeding rates in spring-staging Semipalmated Sandpipers (Calidris pusilla) using different foraging modes

2018 ◽  
Vol 96 (9) ◽  
pp. 996-1001 ◽  
Author(s):  
Ivana Novcic ◽  
Guy Beauchamp
Keyword(s):  
Delaware Bay ◽  
Nearest Neighbour ◽  
Feeding Rates ◽  
Stopover Site ◽  
Neighbour Distance ◽  
Short Intervals ◽  
Foraging Modes ◽  
Calidris Pusilla ◽  
Spring Stopover ◽  
Semipalmated Sandpipers

We examined the influence of the density of foragers on feeding rates of Semipalmated Sandpipers (Calidris pusilla (Linnaeus, 1766)) while using different foraging modes at a spring stopover site in Delaware Bay, USA. Using dynamic estimates of interindividual distances obtained at short intervals of time, we explored how forager density affected feeding rates when Semipalmated Sandpipers used visual pecking or tactile probing. Pecking rate significantly increased with interindividual distances, whereas probe rate was not affected by density. Our study also showed that in fast-moving foragers, such as Semipalmated Sandpipers, in which the number of nearby foragers and distance to the nearest neighbour continuously change throughout the foraging bout, pecking rates are more affected by nearest neighbour distance than by the number of foragers in their immediate vicinity. In addition, our study implies that foragers using different foraging modes might be differently affected by nearby competitors perhaps in response to prey disturbance by neighbours.

Ecotourism and Birds in Coastal New Jersey: Contrasting Responses of Birds, Tourists, and Managers

1995 ◽  
Vol 22 (1) ◽  
pp. 56-65 ◽  
Author(s):  
Joanna Burger ◽  
Michael Gochfeld ◽  
Larry J. Niles
Keyword(s):  
New Jersey ◽  
Human Population ◽  
Migratory Birds ◽  
Delaware Bay ◽  
Charadrius Melodus ◽  
Sterna Antillarum ◽  
Least Terns ◽  
Piping Plovers ◽  
Diverse Cultures ◽  
Aesthetic Values

People of diverse cultures appreciate and observe wildlife. With the increase in the importance of economic, social, and aesthetic, values of wildlife comes the responsibility for wise management and use of these resources to ensure biodiversity and the continued wellbeing of the populations. We describe several ways in which ecotourists affect the behaviour, reproductive success, and population levels, of breeding and migratory birds in New Jersey — a heavily industrialized, coastal US state with a dense human population. We use several case-studies to illustrate the effects of ecotourists on birds: heronries, breeding Least Terns (Sterna antillarum), foraging Piping Plovers (Charadrius melodus) during the breeding season, migrant shorebirds and gulls at Caven Point and Delaware Bay, and migrant hawks at Cape May.

Factors influencing migratory decisions made by songbirds on spring stopover

2014 ◽  
Vol 46 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Kristen M. Covino ◽  
Rebecca L. Holberton ◽  
Sara R. Morris
Keyword(s):  
Factors Influencing ◽  
Spring Stopover
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