Tag: all of Crex

Effects of season, plasma testosterone and body size on corncrake (Crex crex) call rhythm.

Corn Crake (Crex crex) Science Article 3 abstract We tested whether the temporal parameters of corncrake (Crex crex) call change seasonally and/or individually. We defined a new, compound variable called RHYTHM, which quantitatively describes how corncrake call is perceived. Temporal parameters of calls, including RHYTHM, were significantly associated with both the time within the breeding […]

Influx van Kwartelkoningen Crex crex in Nederland in 1998

Corn Crake (Crex crex) Science Article 4 abstract Halverwege de jaren negentig leek het doek definitief gevallen voor de Nederlandse populatie Kwartelkoningen. Het broedbestand telde nog hooguit 60 territoria en zou gezien de ontwikkelingen in voorgaande jaren waarschijnlijk snel verder afnemen. Groot was dan ook de verrassing toen in 1997 uit het niets meer dan […]

Analyse van kerngebieden van Kwartelkoningen in Nederland in 1999 en 2000

Corn Crake (Crex crex) Science Article 8 abstract In het kader van de Bescherming Kwartelkoning 2001 (Gerritsen et al. 2001) is door SOVONVogelonderzoek Nederland een overzicht gemaakt van de gebieden die in Nederland van belang zijnvoor het voorkomen van de Kwartelkoning. Doel van deze analyse was het in kaart brengen van diegebieden die van nationale […]

International Single Species Action Planfor the Conservation of the Corncrake

Corn Crake (Crex crex) Science Article 11 abstract The Corncrake is considered ‘near threatened’ worldwide. It is included in Annex I of the EU Bird Directive, Appendix II of the Bern Convention and Appendix II of the Bonn Convention. Corncrakes breed widely across Eurasia, from the Atlantic to western Siberia. The core wintering area is […]

Kwartelkoningen in Nederland in 2004

Corn Crake (Crex crex) Science Article 7 abstract After a population recovery in 1997, efforts to protect Corncrakes in the Netherlands have increasedrecently. Since 2001, a national conservation scheme is carried out by Vogelbescherming Nederland(BirdLife The Netherlands), SOVON Vogelonderzoek Nederland (Dutch Centre for FieldOrnithology), the Ministry of Agriculture, Fisheries and Food Quality and several localgovernmenmental […]

International corncrake monitoring

Corn Crake (Crex crex) Science Article 9 abstract An International Corncrake Monitoring Scheme is suggested in order to follow the populationtrend of Corncrakes affected by large-scale changes in land-use in Central and EasternEuropean Countries. A low cost and relatively low effort monitoring method is described inthis paper. Corncrake experts in all breeding range countries are […]

Kwartelkoningen in Nederland in 2005.

Corn Crake (Crex crex) Science Article 6 abstract After a population recovery in 1997, efforts to protect Corncrakes in the Netherlands have increased recently. Since 2001, a national conservation scheme is carried out by Vogelbescherming Nederland (BirdLife The Netherlands), SOVON Vogelonderzoek Nederland (Dutch Centre for Field Ornithology), the Ministry of Agriculture, Fisheries and Food Quality […]

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 […]

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 […]