The Big ImageBoard (TBIB) - 2017 4 fingers all fours anal anal penetration anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro anti dev anus armpit hair avian ayden (brogulls) backsack bailey (brogulls) balls bdsm beach beak biceps big butt big muscles biped bird black beak black body black eyebrows black eyes black feathers black markings blindfold blue sky bodily fluids body hair bondage border bound brogulls brother (lore) brother penetrating brother brothers (lore) butt clenched teeth cloud comic cuff (restraint) detailed background dialogue dipstick beak dipstick tail doggystyle dominant dominant male dominant pov dot eyes duo english text erection eyebrows feathers feet fingerless (marking) fingers first person view from behind position genitals grey body grey feathers grey tail grey tail feathers gull handcuffed handcuffs hands behind back hi res humanoid genitalia humanoid penis incest (lore) kneeling larger male lari larid light little brother dom old brother sub lying male male/male male penetrated male penetrating male penetrating male male pov markings membrane (anatomy) metal cuffs multicolored beak multicolored body multicolored feathers multicolored sky multicolored tail multicolored tail feathers muscular muscular male muscular sub night nipples non-mammal nipples nude nude beach number on front on towel open mouth outdoor nudity outside page number penetrating pov penetration penis pink sky pubes purple sky restraints sand seaside sex sex on the beach shackles shaded shadow sibling (lore) simple eyes size difference sky small dom big sub smaller male smile standing star starry sky submissive submissive male sweat tail tail feathers tail markings teeth text thick eyebrows thin eyebrows tight orifice toes towel tuft two tone beak two tone tail two tone tail feathers webbed feet white balls white body white border white feathers white penis white tail white tail feathers yellow beak