Thick-billed Plover (Charadrius wilsonia) Science Article 1 abstract Male incubation, defined as exclusive incubation by the male, is thought to be a necessary step in the evolution of polyandry from monogamy in birds. When the female has time to gather more food, she can lay clutches more rapidly, which may be an advantage under certain […]
Thick-billed Murres Uria lomvia replace mates during breeding
Thick-billed Murre (Uria lomvia) Science Article 2 abstract Among most seabirds, including murres Uria spp., the breeding pair take turns incubating the eggs and feeding and brooding the nestlings (Lack 1968, Gaston 2004). This collaboration is usually critical to the rearing of the chick. Consequently, the death or disablement of one parent during breeding may […]
Distribution of Murres outside the Breeding Season
Thick-billed Murre (Uria lomvia) Science Article 1 abstract The main purpose of this document is to propose a coordinated international banding plan for Thick-billed Murres and Common Murres. Banding is an essential tool for describing with mapping the winter distribution of different murre populations, identifying overlapping distributions, determining the timing of migration, and ascertaining impacts […]
Parental body mass changes during the nestingstage in two Lark species in a semi-arid habitat
Thekla Lark (Galerida theklae) Science Article 1 abstract Parental body mass changes during the nesting period were analysed for Thekla Larks,Galerida theklae, and Lesser Short-toed Larks, Calandrella rufescens. Body mass of femaleThekla Larks declines from the start of incubation until the chicks fledge; laying date,interpreted as the number of renesting attempts, also has a negative […]
Seasonal and interannual variability in laying date, clutch size, egg volume and hatching asynchrony of four lark species in Mediterranean Spain
Thekla Lark (Galerida theklae) Science Article 2 abstract To describe the variation in laying date, clutch size, egg volume and hatching asynchrony of four lark species (Skylark Alauda arvensis, Short-toed Lark Calandrella brachydactyla, Thekla Lark Galerida theklae and Lesser Short-toed Lark Calandrella rufescens) and at two different time scales: between years (large-scale variation), and within […]
Migration and morphometrics of Temminck’s StintCalidris temminckii at Ottenby, southern Sweden
Temmincks Stint (Calidris temminckii) Science Article 1 abstract Data are reported from 55 years of ringing and observation on the migration of Temminck’s Stint Calidristemminckii at Ottenby Bird Observatory, Sweden. Numbers ringed have declined since the 1940s due tohigh numbers caught in 1948 and 1949. Thereafter there is no clear trend. The overall autumn migrationdirection […]
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 […]
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 […]
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 […]
Wood quality and the Tawny Owl Strix aluco in different foresttypes of central Italy
Tawny Owl (Strix aluco) Science Article 3 abstract We correlated breeding density and proportion of wooded area per territory of Tawny Owl Strix aluco measured in four deciduous forest types with forest elevation and songbird abundance, both regarded as estimators of forest productivity. The proportion of wooded area was positively correlated to forest elevation, being […]