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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
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
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 ; Krzysztof Kaczmarek, Auteur ; Radoslaw Wlodarczyk, Auteur ; Tomasz Janiszewski, Auteur ; Rafal Bargiel, Auteur
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[...]
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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[...]
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Piotr Minias, Auteur ; Krzysztof Kaczmarek, AuteurEstimates of refuelling rates in migrating waders are best based on intra-seasonal recaptures of individually marked birds. This method, however, has methodological problems associated with capture effects and difficulties in attaining sufficien[...]
Article
Piotr Minias, Auteur ; Krzysztof Kaczmarek, Auteur ; Tomasz Janiszewski, Auteur ; Zbigniew Wojciechowski, Auteur
