Before you go running off to tractor supply for Corid, they haven't been eating any red berries have they. That poop looks like it has cherry red translucent gelatinous lumps in it rather than blood red congealed blood...... can you transfer some to a white surface to check.... this is the season for berries... not saying cherries but other smaller berries from a shrub perhaps?
If you are sure it is blood or want to dose them anyway, you will find Corid in the Cattle section of Tractor Supply believe. It comes in powder or liquid. Either will do. 1.5 teaspoons of powder per gallon of water, mixed fresh each day for 5 days or 2 teaspns of liquid corid to a gallon. You can direct dose a couple of drops of the concentrated liquid into their beaks if they are lethargic and looking sick but otherwise just treat their water and make sure they do not have access to any other water and only dry feed, so that they have to drink plenty. After 5 days, you should half or third the dilution of Corid for a further 10-14 days.
Good luck and hope it is just berries and they don't need medication.
