17 E. Çelik A. Durmuş Journal of Animal and Plant Sciences JAPS 20202020/03/02 30 2 345-354 1018-7081 https://doi.org/10.36899/JAPS.2020.2.0054 <p>The aim of this study was to statistically evaluate bird populations in Akdoğan Lakes by means of Poisson and negative binomial regression models. The over-dispersion value in Poisson regression was much higher than 1.0 (33.827). In contrast, the value of over-dispersion in the negative binomial regression was very close to 1.0 (1.598). Therefore, the parameter estimates were interpreted considering the negative binomial regression. When spring season was considered as a reference parameter, the change in population densities in other seasons was not statistically significant. The population changes in other habitats were not statistically significant, when reed area was considered as a reference parameter. The change in the population density of 13 ordo groups is non significant when the Anseriformes order was&nbsp; evaluated as reference parameter. The population change in the Gruiiformes population was 11.951 times higher compared with the change in reference parameter and the change was statistically significant (p &lt;0.01).<br>As a result, it is recommendable to use negative binomial regression with the scope of&nbsp; removing over-dispersion problem in the bird population modeling.</p> Akdoğan (Hamurpet) Lakes, Over-disperison, Bird populations, Negative binominal regression, Poisson regression Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=ZLG-18-0029