Talk:Snake with feather
A 5-glider synthesis is known:
#N snakewithfeather_synth #C Glider synthesis of snake with feather #C http://conwaylife.com/wiki/Snake_with_feather x = 37, y = 30, rule = B3/S23 11bo$11bobo$11b2o4$9bo$8bo$8b3o5$9b2o$8b2o$10bo2$5bo$4b2o$4bobo$3o$2bo $bo4$30b2o$30bo2b2obo$31bobob2o$32bo!