We have previously narrated through Ata' (may Allah have mercy on him) from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that he said: "(If a person in ihram kills) a pigeon, (the penalty for it) is a sheep; none of it is to be eaten, rather it is to be given in charity."
And it has reached us from him, concerning a man who has intercourse with his wife before the Tawaf (al-Ziyarah): "Slaughter a fat she-camel and feed it to the poor."
And it has reached us from Tawus and Sa'id bin Jubayr (may Allah have mercy on them both) that they both said: "(A person in ihram) should not eat from the compensation (animal) for game, nor from the expiation (animal)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / Q10245