Don't like the 4 in 1 because there isn't usually enough of each different med to treat what it is supposed to treat. Better off with a separate canker med, like Metronidazole or something, and Enrofloxin or Amoxycillin for the antibiotic.
Also don't know what is in the broad spectrum antibiotic, so can't say.
Don't know what is in the wormer, and some things are not really good for pigeons, even though they are sometimes sold for them. Would have to know what the drug was.