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Article
Piotr Minias, Auteur ; Jesus Gomez, Auteur ; Tomasz Janiszewski, AuteurBirds have evolved an astonishing diversity of egg pigmentation and this variation is driven by a complex interplay of proximate and ultimate factors. In ecological research, egg pigmentation is often measured at randomly selected points or regi[...]
Article
Adrian Surmacki, Auteur ; Piotr Minias, Auteur ; Karolina Kudelska, AuteurDans Ibis (163(2) 2021)Melanin is the most common pigment in avian plumage and has various functions, including signalling individual condition, social status, aiding in camouflage and strengthening feathers. To date, most research focusing on melanin-based colours ha[...]
Article
Piotr Indykiewicz, Auteur ; Patrycja Podlaszczuk, Auteur ; Maciej Kamiński, Auteur ; Radosław Włodarczyk, Auteur ; Piotr Minias, AuteurDans Ibis (161(4) 2019)Central nesting sites within avian colonies are often more profitable in terms of fitness, as they can offer better protection against predators compared with colony edges. Thus, central sites are expected to attract high-quality individuals, wh[...]
Article
Piotr Indykiewicz, Auteur ; Piotr Minias, AuteurTwo or three gull species (Laridae) commonly breed together in one colony, often caused by a shortage of optimal breeding sites or as an anti-predator behaviour. Observers usually assume that the benefits of colonial breeding outweigh potential [...]
Article
Maciej Kamiński, Auteur ; Jerzy Bańbura, Auteur ; Bartosz Janic, Auteur ; Lidia Marszal, Auteur ; Piotr Minias, Auteur ; Piotr Zieliński, AuteurNestling diet and parental provisioning rate are important determinants of reproductive success and future offspring performance in birds. The diet of Black Stork (Ciconia nigra) nestlings was characterized and tested for intra-seasonal and broo[...]
Article
Piotr Indykiewicz, Auteur ; Patrycja Podlaszczuk, Auteur ; Aleksandra Janiszewska, Auteur ; Piotr Minias, AuteurUrban colonization by wildlife involves a combination of several different mechanisms, including phenotype or genotype sorting, phenotypic plasticity and microevolutionary adaptation. Combination of these processes can produce a rapid phenotypic[...]
Article
Radosław Włodarczyk, Auteur ; Patrycja Podlaszczuk, Auteur ; Krzysztof Kaczmarek, Auteur ; Tomasz Janiszewski, Auteur ; Piotr Minias, AuteurThe relative ratio of the two main leukocyte types, heterophils (H) and lymphocytes (L), is known to change proportionally to the concentrations of stress hormones in the circulating blood. Thus, analysis of leukocyte profiles serves as a reliab[...]
Article
Kamila Gach, Auteur ; Tomasz Janiszewski, Auteur ; Radoslaw Wlodarczyk, Auteur ; Bartosz Lesner, Auteur ; Piotr Minias, AuteurThe aim of this study was to evaluate which factors determined immediate mortality of Common Tern (Sterna hirundo) chicks during a heavy rainfall. On 26 June 2013, a heavy rainfall event was recorded at an inland colony of Common Terns in centra[...]
Article
Piotr Minias, Auteur ; Adrian Surmacki, Auteur ; Karolina Kudelska, Auteur ; Patrycja Podlaszczuk, Auteur ; Maciej Kamiński, Auteur ; Krzysztof Kaczmarek, Auteur ; Radosław Włodarczyk, Auteur ; Tomasz Janiszewski, AuteurDans Ibis (160(1) 2018)There is increasing evidence that melanin-based plumage coloration correlates with different components of fitness and that it may act as a social or sexual signal of individual quality. We analysed variation in melanin pigmentation in the outer[...]
Article
Tomasz Janiszewski, Auteur ; Piotr Minias, Auteur ; Bartosz Lesner, Auteur ; Krzysztof Kaczmarek, AuteurBreeding performance of many vertebrate species is known to improve over the early stages of the life cycle, which has been commonly attributed to the progressive improvement in competences and increasing investment in reproduction. While there [...]
Article
Piotr Minias, Auteur ; Włodzimierz Meissner, Auteur ; Radosław Włodarczyk, Auteur ; Agnieszka Ożarowska, Auteur ; Anna Piasecka, Auteur ; Krzysztof Kaczmarek, Auteur ; Tomasz Janiszewski, AuteurMigration is an energetically expensive and hazardous stage of the annual cycle of non-resident avian species, and requires certain morphological adaptations. Wing shape is one of the morphological traits that is expected to be evolutionarily sh[...]
Article
Piotr Minias, Auteur ; Wlodzimierz Meissner, Auteur ; Radoslaw Wlodarczyk, Auteur ; Agnieszka Ożarowska, Auteur ; Anna Piasecka, Auteur ; Krzysztof Kaczmarek, Auteur ; Tomasz Janiszewski, AuteurMigration is an energetically expensive and hazardous stage of the annual cycle of non-resident avian species, and requires certain morphological adaptations. Wing shape is one of the morphological traits that is expected to be evolutionarily sh[...]
Article
Tomasz Janiszewski, Auteur ; Piotr Minias, Auteur ; Zbigniew Wojciechowski, AuteurThe process of transition from nesting on trees to electricity poles has been observed over the last decades in many European populations of the White Stork Ciconia ciconia, but the direct mechanisms behind this process have not been explicitly [...]
Article
Piotr Minias, AuteurThe aim of this study was to describe the size dimorphism in adult Eurasian Coots (Fulica atra). Appropriate discriminant functions to allow efficient sex determination on the basis of morphological measurements were developed. Breeding Eurasian[...]
Article
Marcin Podlaszczuk, Auteur ; Zbigniew Wojciechowski, Auteur ; Patrycja Podlaszczuk, Auteur ; Piotr Minias, Auteur ; Tomasz Janiszewski, Auteur ; Agnieszka Wojciechowska, AuteurSeveral different selective pressures have been suggested to explain an intense competition for early return to breeding grounds in birds. In this study we hypothesized that shortening day length during summer months may constitute additional se[...]
Article
Piotr Minias, Auteur ; Alina Minias, Auteur ; Jaroslaw Dziadek, AuteurCapsule Patterns of parentage were studied in a colony of Whiskered Terns Chlidonias hybrida in central Poland. We assessed the parentage of
Article
Tomasz Janiszewski, Auteur ; Piotr Minias, Auteur ; Zbigniew Wojciechowski, AuteurCapsuleThe phenology of arrival at the breeding grounds and reproductive output of White Storks were studied in central Poland between 2000 and 2011. Although, in general, there was a strong negative relationship between the number of fledglings[...]
Article
Piotr Minias, Auteur ; Bartosz Lesner, Auteur ; Tomasz Janiszewski, AuteurCapsule Body mass of Whiskered Tern chicks from the central parts of subcolonies grew at a higher rate in comparison to chicks hatched in the peripheral zones. Growth rates of both body mass and head length correlated positively with nest densit[...]
Article
RADOS\LAW W\LODARCZYK, Auteur ; Krzysztof Kaczmarek, Auteur ; Piotr Minias, Auteur ; Tomasz Janiszewski, Auteur
Article
Piotr Minias, Auteur ; Krzysztof Kaczmarek, AuteurWe investigated the reliability of basic plasma metabolite concentrations as predictors of body condition in the nestlings of the Great Cormorant (Phalacrocorax carbo sinensis), a species with marked hatching asynchrony and well-established intr[...]
Article
Piotr Minias, Auteur ; Tomasz Iciek, AuteurThe extent of post-juvenile moult in passerines is highly variable, but the causes and consequences of such variability remain poorly understood. We tested the hypothesis that the extent and symmetry of post-juvenile moult of Greenfinches Cardue[...]
Article
Piotr Minias, Auteur ; Krzysztof Kaczmarek, Auteur ; Radoslaw Wlodarczyk, Auteur ; Tomasz Janiszewski, Auteur ; Rafal Bargiel, Auteur
Article
Tomasz Janiszewski, Auteur ; Piotr Minias, Auteur ; Zbigniew Wojciechowski, Auteur ; Patrycja Podlaszczuk, Auteur
Article
Piotr Minias, AuteurAlthough blood concentrations of glucose and haemoglobin are known to correlate with nutritional state of individuals, hyperglycaemic states in vertebrates are often linked to anaemia. A negative relationship between blood concentrations of gluc[...]
Article
Piotr Minias, Auteur ; Radoslaw Wlodarczyk, Auteur ; Alina Minias, Auteur ; Jaroslaw Dziadek, AuteurMuch effort has been devoted to identify ecological and life-history traits which facilitate urban colonization by wild avian species, but surprisingly little is known about the population-level mechanisms of urbanization processes. In general, [...]
Article
Piotr Minias, Auteur ; Krzysztof Kaczmarek, AuteurIn most of colonial avian species, central parts of the colonies offer higher safety in terms of predatory pressure. However, in heterogeneous habitats, nest sites of high physical quality are likely to offer effective protection against predato[...]
Article
Piotr Minias, Auteur ; Krzysztof Kaczmarek, Auteur ; Anna Piasecka, Auteur ; Marika Kuncewicz, Auteur
Article
Katarzyna Wojczulanis-Jakubas, Auteur ; Piotr Minias, Auteur ; Krzysztof Kaczmarek, Auteur ; Tomasz Janiszewski, AuteurWe examined the brood sex ratio and offspring body mass in relation to the timing of breeding and brood size in the Great Cormorant Phalacrocorax carbo sinensis. The brood sex ratio was not related to brood size but it was significantly related [...]
Article
Piotr Minias, Auteur ; Krzysztof Kaczmarek, Auteur ; Radoslaw Wlodarczyk, Auteur ; Tomasz Janiszewski, AuteurAdaptative significance of melanin-based coloration in birds remains poorly recognized. It has been suggested that genes responsible for melanin synthesis may have pleiotropic effect on several physiological and behavioural functions, including [...]
Article
Piotr Minias, Auteur ; Radoslaw Wlodarczyk, Auteur ; Wlodzimierz Meissner, Auteur ; Magdalena Remisiewicz, Auteur ; Krzysztof Kaczmarek, Auteur ; Andrzej Czapulak, Auteur ; Przemyslaw Chylarecki, Auteur ; Adam Wojciechowski, Auteur ; Tomasz Janiszewski, AuteurThe Common Snipe Gallinago gallinago migrates in large numbers through central Europe towards its wintering grounds in western Europe. Over the past 20 years more than 12 000 Common Snipes were ringed at seven ringing stations in Poland during t[...]
