Reference for Chullin 246:1
עולת העוף לרבי אלעזר ברבי שמעון ליגזר דילמא לא אתי למעבד רוב שנים
the same is to be feared in the case of the burnt-offering of a bird, according to the view of R'Eleazar son of R'Simeon, namely that he will not divide the greater part of both organs [of the throat]!<span class="x" onmousemove="('comment',' In sacrificing the burnt-offering of a bird the head had to be nipped off by the officiating priest, but not severed entirely (cf. Lev. I, 17) ; and according to the interpretation of R. Eleazar b. R. Simeon, it means that he must divide the greater portion of each organ and no more (v. supra 21a) . Now is there not a similar apprehension in this case that the priest will not divide the greater portion of the organs?');"><sup>1</sup></span>