Tree Sparrow (Passer montanus) Science Article 7 abstract This study is based on the spring temperaturesand laying dates of first eggs of threepasserines (sedentary: Great Tit, Parus majorand Tree Sparrow, Passer montanus; migratory:Starling, Sturnus vulgaris). Laying datesof first eggs were used as estimates of timingof breeding. The term ‘laying date’ is definedas the date of […]
Category: Passeriformes
UNSUITABILITY OF TREE SWALLOWS AS HOSTS TO BROWN-HEADED COWBIRDS
Tree Swallow (Tachycineta bicolor) Science Article 9 abstract Swallows are parasitized rarely by Brown-headed Cowbirds (Molothrus ater). I added cowbird eggs to 15 Tree Swallow (Tachycineta bicolor) nests. One egg disappeared and seven failed to hatch whereas 63 of 66 host eggs hatched. The seven cowbird hatchlings died in 3-12 (mean = 6.3) d, whereas […]
Laying order, hatching asynchrony and nestling body mass in TreeSwallows Tachycineta bicolor
Tree Swallow (Tachycineta bicolor) Science Article 6 abstract We studied the reproductive biology of a box-nesting population of Tree SwallowsTachycineta bicolor in southeastern Wisconsin, USA. We were interested particularlyin the relationship between laying order and hatching order and the extent to whicheach was a predictor of nestling body mass. We found that laying order was […]
Influences of restock age and habitat patchiness on Tree Pipits Anthus trivialis breeding in Breckland pine plantations
Tree Pipit (Anthus trivialis) Science Article 1 abstract The British Tree Pipit Anthus trivialis population has shown a marked decline in recent decades, together with a range contraction that has been most apparent in central and southeast England. In East Anglia, the species is now largely restricted to heathland and, in particular, the conifer plantations […]
Magnetic cues and time of season affect fueldeposition in migratory thrush nightingales(Luscinia luscinia)
Thrush Nightingale (Luscinia luscinia) Science Article 2 abstract Bird migration requires high energy expenditure, and long-distance migrants accumulate fat for use asfuel during stopovers throughout their journey. Recent studies have shown that long-distance migratorybirds, besides accumulating fat for use as fuel, also show adaptive phenotypic flexibility in several organsduring migration. The migratory routes of many […]
Wingbeat frequency and the body drag anomaly: wind-tunnel observations on a thrush nightingale (Luscinia luscinia) and a teal (Anas crecca)
Thrush Nightingale (Luscinia luscinia) Science Article 1 abstract A teal (Anas crecca) and a thrush nightingale (Luscinia luscinia) were trained to fly in the Lund wind tunnel for periods of up to 3 and 16 h respectively. Both birds flew in steady flapping flight, with such regularity that their wingbeat frequencies could be determined by […]
Observations at a nest of Thrush-like Antpitta Myrmotheracampanisona in eastern Ecuador
Thrush-like Antpitta (Myrmothera campanisona) Science Article 1 abstract Thrush-like Antpitta Myrmothera campanisona is one of a species-pair in this genus belonging to the ground antbirds (Formicariidae). It is distributed from south-east Colombia, southern Venezuela and the Guianas to north-west Bolivia and Amazonian Brazil11. One race, signata, occurs in Ecuador10. Brief descriptions of nests from French […]
Song structure and repertoire sharing in the Tawny Pipit Anthuscampestris in Poland
Tawny Pipit (Anthus campestris) Science Article 3 abstract The present study characterizes the song of Tawny Pipit males (n = 55) recorded in May 2005 in theWielkopolska region of Poland. Tawny Pipits sang with a very variable rate of 4-28 songs per minute Tomasz S. OSIEJUK et al, ACTA ORNITHOLOGICA Vol. 42 (2007) No. 2 […]
Seasonal variation in nest mass and dimensions in an open-cup ground nesting shrub-steppe passerine: The Tawny Pipit Anthus campestris
Tawny Pipit (Anthus campestris) Science Article 2 abstract The probability of predation was unrelated to outer nest diameter nor was there any relationship between internal diameter and the presence of unhatched eggs. Wall thickness and nest mass declined as the season progressed but there was no relationship between these variables and the mean environmental temperature […]
Het verdwijnen van de Duinpieper
Tawny Pipit (Anthus campestris) Science Article 1 abstract Tot in de 19e eeuw kwamen in Nederland grote stuifzandgebieden voor. Met name op de Veluwe is in historische tijden verbitterd strijd geleverd tegen de uitbreiding van het zand, dat vrij spel kreeg door ontbossing en intensieve beweiding. Ook nu behoren onze zandverstuivingen tot de grootste van […]