White-tailed eagle at . However, this is dwarfed by the largest avian prey credited to a white-tailed eagle, an adult male great bustard ("Otis tarda"), which weighed an estimated (which, much like exceptionally large fish taken, must have been consumed in the killing spot or subsequently dismantled as too large to fly with). Among the land birds taken, more than 20 passerines are included in the prey spectrum but most are obviously too small and swift to be anything but incidental prey. The smallest avian prey known for white-tailed eagles was a great tit ("Parus major"), a species which weighs on average.
Xylota tarda Russia and the Caucasus then through Russia to Siberia and the Pacific coast (Kuril islands). Old woodland species running on the foliage of bushes and shrubs and on tree stumps and nearby bare ground. The larva has been found in sap runs at the base of the trunk of "Populus tremula" and in rotting wood of "Fagus". Xylota tarda Xylota tarda is a Palearctic species of hoverfly. External images For terms see Morphology of Diptera<br> Wing length 5·5-8·5 mm. Large red areas on black abdomen. Wing membrane not infuscated. Dorso-apical white bristle on metatarsus 1. Antero-dorsal pale hairs on the