The development of the Rook's(Corvus frugilegus)colony in the face of shifting spring phenology

作     者：Adam Zbyryt Karol Zub Cezary Mitrus Adam Zbyryt;Karol Zub;Cezary Mitrus

作者机构：Doctoral School of Exact and Natural SciencesUniversity of Bialystok Mammal Research InstitutePolish Academy of Sciences Department of Vertebrate Ecology and PaleontologyInstitute of BiologyWroclaw University of Environmental and Life Sciences 

出 版 物：《Avian Research》 (鸟类学研究（英文版）)

年 卷 期：2022年第13卷第2期

页      面：170-174页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

主　　题：Breeding colony Climate change Corvus frugilegus Nest building Photoperiodism Predictable breeding 

摘      要：Many birds species breed in *** of the species in the Corvidae family nesting in groups is the Rook(Corvus frugilegus).The construction of the nest is costly for birds and needs high energy ***,birds should optimize the time of nest building in relation to environmental,especially weather,***,birds should adapt their breeding phenology,including the date of starting the construction of nests for climate *** observed the dynamics of increasing numbers of nests in a colony of Rooks in relation to air temperature,wind,rainfall,snowfall and day-length(indirect indicator of photoperiodism).Observations were carried out during three breeding seasons(2015-2017)in a large rookery in a big city in north-eastern *** increase in the number of nests was correlated only with day length and no effect of climatic factors on the number of nests in the colony was *** of nests varied significantly between successive years of *** the case of the Rook(predictable breeders),the photoperiod seems to be the most important factor influencing breeding behavior,especially nest *** the last three decades,increasing temperature and time of spring phases have advanced and have influenced changes in the phenology of the availability of food ***,a rapid decline in the numbers of breeding pairs of the Rook in Poland has been observed,especially in the last three *** attachment to the length of the day,which is the main factor responsible for the development of the breeding colony,makes the Rook appear to be a species with low plasticity in the face of rapid climate ***,we suggest that may indirectly influence the decrease in the breeding population of the Rook.