Please don't, as the effect on lifestock and here poultry is detrimental as the linked studies show https://scialert.net/fulltext/?doi=jbs.2013.570.576 . Here an excerpt:Right, I understand that & with their ages I have been watching, but just too much of a coincidence that all 3 suddenly raged on the same day, all within a half hour on the berries. I am thinking of giving it a few days & letting them have some more to see what happens.
"Poultry: A number of researchers have reported poor performance following the ingestion of cocoa materials by chickens. Egg production was adversely affected by the consumption of cocoa bean shell in a study conducted by Olubamiwa et al. (2006). Teguia et al. (2004) also observed detrimental effects on growth when the level of cocoa pod husk incorporated in the diet of broiler chickens exceeded 10%. According to Odunsi et al. (1999), broiler chickens fed 15% untreated cocoa bean meal exhibited negative effects including an increase in creatinine levels and a reduction in feed intake, weight gain and haemoglobin level. These adverse effects were absent in chickens fed a similar amount of cocoa bean meal which had been treated with alkali or hot water to reduce theobromine content. However, detrimental effects were observed at an inclusion rate 30% of alkali-treated or hot water-treated cocoa bean meal. These observations are in conformity with the findings of earlier studies, in which Odunsi and Longe (1995, 1998) observed depressed weight gain and feed intake as well as increased mortality when chickens were fed 10-30% cocoa bean meal. Similar observations have been made following the inclusion of cocoa shell meal in the diets of broiler chickens (Day and Dilworth, 1984). "