The Utilization Of Public Information On Secondary Cave Rest Birds' Nest Site Selection

In the past few years,researching public information(PI)is getting more and more focus in the field of bird ecology,and the related concept and mechanism are becoming more mature.This view focused on the concept of public information,combining with the related theoretical background,following the latest research progress.It's the overview of the differences with other types of information in animal behavioral ecology and the application of future trends.According to the researches of public information in avian behavior,it mainly focuses on birds' feeding behavior,habitat selection,mate quality judgement and information transfer and so on.Even though large numbers of theoretically plausible explanations for public information abroad,there have been few direct empirical tests that can provide unambiguous support for only one type of explanation interiorly.Domestic research in this field has just started,in order to improve and promote this systemm complete,we take Sitta Europaea as example,to explore the role of public information in its nest site selection,to further supplement the theory of public information.In order to study the influne of public information on Sitta Europaeas' nest site selection system,I went to Zuojia Natural Protection District,Jilin Province during March to July in 2012 and 2013.The main topics are: the character study for reproduction density correlated with the diversity of habitat structure of sitta europaeas;behavior observation;the influnce on sitta europaeas' nest site selection and so on.The results are as followed:(1).the reproduction density of sitta europaeas was correlated with the diversity of habitat structure,they were have remarkable correlativity,that was the habitat structure was more complexity,and the reproduction density was more bigger;(2).Sitta europaeas prefer to select the location on the mountatin at the hillside(64%)and mountain top(26%),mainly for the reason of the opened-eye view from top and they can avoid the predation from other natural enemies;(3)Sitta europaeas also has the selectivity for living trees,and they prefer to select the broadleaved deciduous forest for nests,after this study,the results show thatthis kind of bird would take high advantage of Salix pierotii(76%),and for Mongolian Oak,the usage rate is 33.3%,and for other kind of broadleaved deciduous forests,they have less options but still optional;(4).When Sitta europaeas having the nest site selection process can choose both of habitat,also choose nest tree,to sample and nest tree "fidelity" embodies the Sitta europaeas in the nest site selection for public information and transfer of information.The utilization of public information mainly reflects on the nest site selection of the second year.The average height of trees and the distance near farmland of sitta europaeas nest were different from comparable samples.The sitta europaea nest is not only the progenitive location of itself,but also the progenitivelocation of some raptors.The altitude of nest arbor,the distance which between forest grassplot and sample,the average diameter of nest arbor,the diameter of nest branch and the cover of up nest are the primary factors of sitta europaea choosing nest.And among all the influncial factors,habitat strcture,nest tree location,nest tree species,nest direction and type of selection,they show a high repeated utilization factor.And after study,we include that the best nest point is the one located on the hillside in the Salix pierotii,the nest diameter bit is(25cm�3,5cm)�(0.5�5cm�0.5)for nest size,the direction is at 45 degrees at east by south or right south.And the nest type is peck holes for sitta europaea.