17 B. A. Boulaouad O. Ailam S. Daoudi-Hacini S. Doumandji. Journal of Animal and Plant Sciences JAPS 20182018/02/01 28 1 321-326 1018-7081 NA <p>In this paper we are studing the diet composition of the short-toed treecreeper&rsquo;s&nbsp;<em>Certhia brachydactyla</em>&nbsp;(Brehm, 1820) nestling in the suburban area of El Harrach (Algeria). The diet analysis is based on examining fecal sacs which were carried out by parents and placed on the bark of&nbsp;<em>Washingtonia robusta</em>&nbsp;and&nbsp;<em>Jacaranda mimosifolia</em> near the nest during the breeding season 2014/2015. Fecal sacs were collected and treated separately in 70% alcohol to identify prey-species. In total, 277 items, representing 66 prey-species were identified from the collected fecal sacs of short-toed treecreeper nestling. The relative abundance index revealed that the insects were dominants with 67.15%, followed by arachnids 27.44%, Gastrapoda 3.61% and the other classes were poorly represented. Regarding the order of the different class-preys, the diet consisted predominantly of Araneae with (27.44%), followed by Coleoptera (24.91%) and Hymenoptera (18.05%). For the prey size, it varied from 1 mm to 15 mm with an average of 4.33&plusmn;0.13 mm. And the most represented prey measuring was between [2,55-4,11 mm].</p> short-toed tree creeper, diet, fecal sac, nestling, prey size Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=2018-JAPS-38