Coot (Fulica atra) Science Article 1 abstract Variation in dimension of nests (external diameter, cup diameter and height), water depth at nesting sites, clutch sizes, egg sizes and hatching success was studied in Coots Fulica atra nesting on two lakes in Algeria in 1996-1997. The main idea of this paper is to provide basic data […]
Category: Rallidae
Age-dependent changes in the shape of the secondary remiges of individual adult Corncrakes Crex crex
Corn Crake (Crex crex) Science Article 1 abstract A comparison of Corncrakes Crex crex of known age showed that the tips of the secondary remiges were, on average, more pointed for birds with remiges grown in the hatching year (HY) than for older adults with remiges grown after the hatching year (AHY; Green et al […]
Estimating the age of Corncrake Crex crex chicks from body weight and the development of primary
Corn Crake (Crex crex) Science Article 2 abstract Two methods for ageing Corncrake Crex crex chicks are described. Data on the body weight of chicks of known age, from broods of radio-tagged females, were used to produce a formula for determining the age of chicks of unknown age. This method was, however, prone to error […]
Monitoring Corncrake Crex crex numbers inEuropean Russia: the first stage
Corn Crake (Crex crex) Science Article 10 abstract The Corncrake is a widespread and common species in Russia. Because agricultural conditionsin Russia are unstable, it is important to establish the Corncrake’s current populationdynamics through studies in pilot areas. Two types of repeated censuses have been carriedout:1. In 1994, there were censuses on pilot plots in […]
Size and quality of the Coot Fulica atra territory in relation to age of its tenants and neighbors.
Coot (Fulica atra) Science Article 5 abstract The size and composition of the breeding territory of the Coot Fulica atra has been studied in relation to the age of the breeding birds, the age of their neighbours, and the date of arrival in the territory. Old pairs arrive earlier than young pairs. Old pairs have […]
Wintering swans Cygnus spp. and Coot Fulica atra in the Oresund,South Sweden, in relation to available food recources
Coot (Fulica atra) Science Article 3 abstract In connection with the building of a Fixed Link (bridge-arti.cial island-tunnel) between Sweden and Denmark intensive studies of waterfowl and benthic fauna and .ora in the Oresund were undertaken as a part of the Environmental Impact Assessment Study. This paper analysis the occurrences of staging and wintering herbivores […]
When do helpers help ? Food availability and helping in the moorhen, Gallinula chloropus
Common Gallinule (Gallinula chloropus) Science Article 3 abstract The importance of food availability as a constraint upon cooperative behaviour was ex amined by providing supplementary food on some breeding territories of a population of moorhens (Gallinula chloropus). First brood juveniles on territories provided with food were more likely to feed their younger second brood siblings. […]
Small, fat male moorhens Gallinula chloropus are healthier
Common Gallinule (Gallinula chloropus) Science Article 4 abstract Analysing the variation in time along the autumn and winter of the extent of the fat reserves of adult male moorhens. In the period preceding pair formation (February 2003), the relationship was obtained between body size (represented by tarsus length) and an effective index of fat reserves […]
Parent-offspring aggression in moorhens
Common Gallinule (Gallinula chloropus) Science Article 2 abstract The purpose of this study was to explain parental aggression to offspring in the moorhen (Gallinula chloropus). Males and females did not feed different subsets of chicks. In addition, there was a positive correlation between feeding rates of each parent to a particular chick and the number […]
Brood parasitism and cooperative nestingin the moorhen, Gallinula chloropus
Common Gallinule (Gallinula chloropus) Science Article 1 abstract During a two year study of the moorhen, Gallinula chloropus, a quarter of the nests found had two or more females laying in them. This was the result of two features of the moorhens’ breeding biology: (1) Cooperative nesting; two (or more) females were paired to the […]