Broad-billed Sandpiper (Limicola falcinellus) Science Article 1 abstract Broad-billed Sandpipers Limicola falcinellus were counted and trapped in Puck Bay on the southern Baltic coast in autumn. The number of arriving birds varied greatly between years. The observed pattern was not completely convergent with data gathered at Ottenby, Sweden, 220 km north of Puck Bay. It […]
Category: Charadriiformes
Components of fitness in Lapwings Vanellus vanellus and Black-tailed Godwits Limosa limosa during the breeding season: Do female body mass and egg size matter?
Black-tailed Godwit (Limosa limosa) Science Article 3 abstract Body mass of incubating females, their egg sizes, hatching success, hatchling masses and brood survival were recorded for individually colour-marked Lapwings Vanellus vanellus and Black-tailed Godwits Limosa limosa breeding on meadows in Kiskunsag National Park, 50 km south of Budapest, Hungary. We found no relationships between egg […]
International Single Species Action Planfor the Conservation of theBlack-winged Pratincole
Black-winged Pratincole (Glareola nordmanni) Science Article 1 abstract The Black-winged Pratincole breeds mainly in the steppe and desert belt of Eurasia from Romaniaand Ukraine in the west to the Russian part of the Altai and to Kazakhstan in the east. It winters inAfrica south of the Sahara desert. Migration through the Middle East countries such […]
Energy costs of chick rearing in Black-leggedKittiwakes (Rissa tridactyla)
Black-legged Kittiwake (Rissa tridactyla) Science Article 1 abstract We studied energy expenditure in adult Black-legged Kittiwakes (Rissa tridoctyla) with doubly labeled waterto measure energy costs of chick rearing. We removed eggs from randomly selected nests and compared energy expenditurelate in the chick-rearing period between adults raising chicks and adults whose eggs had been removed. Adultsraising […]
Energetics of Black-legged Kittiwake Rissa tridactyla chicks.
Black-legged Kittiwake (Rissa tridactyla) Science Article 6 abstract We compiled the energy budgets of Black-legged Kittiwake Rissa tridactyla chicks in Kongsfjorden, Svalbard (79 deg N, 12 deg E), utilising (1) deuterium turnover rates to estimate food intake, (2) the doubly labelled water ((D2O-O18) method in conjunction with mass gain measurement and carcass analysis to determine […]
Changes in body condition in breeding kittiwakes Rissa tridactyla
Black-legged Kittiwake (Rissa tridactyla) Science Article 3 abstract We investigated the seasonal pattern of changes in body condition of breedingblack-legged kittiwakes Rissa tridactyla in Svalbard (79 deg N) to evaluate whetherchanges in body condition were a consequence of the energetic demands of breeding(the reproductive stress hypothesis) or of voluntary anorexia to attain lower flightcosts during […]
CHICK DIET AND DAILY ACTIVITY PATTERN OFCOMMON MURRES AND BLACK-LEGGED KITTIWAKESAT BLUFF SEABIRD COLONY,NORTON SOUND, ALASKA
Black-legged Kittiwake (Rissa tridactyla) Science Article 9 abstract At Bluff seabird colony, Norton Sound, Alaska, Common Murres(Uria aalge) fed their chicks with mostly blennies in the afternoon. Parents ofBlack-legged Kittiwakes (Rissa tridactyla) shifted chick guarding duties at any timeof day. Foraging trip time of the murres at Bluff (3.6 hr) was about 1.4-3.3 timeslonger than […]
In kittiwakes food availability partially explains theseasonal decline in humoral immunocompetence
Black-legged Kittiwake (Rissa tridactyla) Science Article 10 abstract 1.The immune system plays an important role in fitness, and interindividual variationin immunocompetence is due to several factors including food supply.2. Seasonal variation in food resources may therefore explain why immunocompetencein bird nestlings usually declines throughout the breeding season J. GASPARINI et al, Functional Ecology 2006 20, […]
Sexual conflict over sperm ejection in monogamous pairsof kittiwakes Rissa tridactyla
Black-legged Kittiwake (Rissa tridactyla) Science Article 5 abstract Socially monogamous partners suffer conflicting interests concerning various aspects of reproduction such as parental care, copulation and fertilization. Female black-legged kittiwakes commonly eject their mates’ sperm immediately following copulations. Because sperm ejection reduces male sperm competitiveness and paternity assurance, males and females have conflicting interests as regards […]
The effectiveness of nest defense by Black-Tailed Godwits
Black-tailed Godwit (Limosa limosa) Science Article 2 abstract This paper describes measurements of the frequency of aerial attacks on avian predators by nesting Black-tailed Godwits. The effects of these attacks on the ranging behaviour of Carrion Crows and the removal of eggs from artificial nests are assessed and compared with the effects of similar attack […]