I found this list a few days back, I'm unsure where the information originates from. I should post in the thread and ask!
Posted by therealsilkiechick in this thread https://www.backyardchickens.com/forum/viewtopic.php?pid=2574182
Plants Toxic to Birds Toxic Plant Toxic part(s) Specific Toxin(s) Symptoms
*Avocado (Persea americana) Pit, leaves, unripe fruit, stems Unknown but related to cardiac toxicity Weakness, inability to perch, labored breathing, feather fluffing
*Black locust (Robina pseudoacacia) Bark, leaves, seeds Robitin, robin Vomiting, diarrhea, weakness, depression, collapse
*Blue-green algae (Microcystis aeruginosa) All parts Anatoxin A, mycrocystin Inability to swim or fly, abnormal posture, frequent defecation, respiratory arrest
*Calla lily (Zantedeschia aethiopiea) All parts Oxalates Oral irritation, difficulty swallowing, vomiting
*Castor bean (Ricinus communis) All parts Ricin I & II, glycosidase Vomiting, diarrhea (may be bloody) Note: similar symptoms may be seen with ingested prayer beans, rosary peas or Seminole beads used in beadwork and rattles)
*Christmas cherry (Solanum pseudocapsicum) All parts including tubers and unripened fruit Solanine, atropine-like alkaloids, saponins Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Coffee beans, (Sesbania drumundii), Tea, Chocolate Beans (coffee) Leaves (tea), all chocolates especially dark Caffeine, theobromine, theophylline Nervous system stimulation, increased rate of breathing and heart rate, seizures, diarrhea
*Diffenbachia (Diffenbachia spp.) All parts Oxalates Oral irritation, difficulty swallowing, vomiting
*Eggplant (Solanum melongena) Stem, leaves, sprouts (ripe fruits are OK) Solanine, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Elephant's ear (Colocasia or Alocasia spp.) All parts Oxalates Oral irritation, difficulty swallowing, vomiting
*Ergot (Claviceps purpurea) All parts Ergopeptide alkaloids Poor blood supply to extremities, hyperexcitability, seizures
*Foxglove (Digitalis pupurea) Entire plant, including water from pot or vase Glycosides, digitalis Vomiting, diarrhea, oral irritation, incoordination, irregular heart rate, collapse
*Jerusalem cherry (Solanum pseudocapsicum) All parts, including tubers, sprouts, and unripe berries Solanine, atropine Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, no urine production, paralysis, seizures
*Jimsonweed (Datura spp.) All parts, especially seeds and leaves Atropine, scopolamine, hyoscyamine Irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Lily of the valley (Convallaria majalis) All parts Cardiac glycosides: convallatoxin Vomiting, diarrhea, oral irritation, incoordination, irregular heart rate, collapse
*Locoweed (Astragalus emoryanus) Leaves Swainsonine, alkaloids Hyperexcitability, incoordination, vomiting, drowsiness
*Milkweed (Asclepias spp.) All parts and latex (milky juice) Cardenoloids (cardiac glycosides) Oral and/or facial blisters, irregular heart rate, incoordination, collapse
*Mistletoe (Phoradendron villosum) All parts, especially holly berries Viscumin, viscotoxin Nausea, vomiting, diarrhea, labored breathing, irregular heart rate, collapse
*Nightshade (Solanum spp.) All parts Belladonna, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Oak (Quercus spp.) All parts Tannins Loss of appetite, diarrhea, increased thirst
*Oleander (Nerium oleander) All parts Glycosides: oleadrum, neroside Vomiting, diarrhea, oral irritation, incoordination, irregular heart rate, collapse
*Philodendron (Philodendron scandens) All parts, including roots Oxalates Oral irritation, difficulty swallowing, vomiting
*Poinsettia (Euphorbia pulcheriama) Leaves, stem, white sap Phorbol esters Vomiting, diarrhea, facial or eye irritation
*Pokeweed (Phytolacca americana) Roots, leaves, berries Saponin Vomiting, tremors, collapse
*Potatoes (Solanum tuberosum) Stem, leaves, sprouts, green skins Solanine, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Rhododendron (Rhodedendron simsii), Rhododendron species (Azalea) All parts Andromedotoxin, grayanotoxin Vomiting, weakness, collapse, seizure, stupor, coma
*Tobacco (Nicotiana spp.) All parts Nicotine Vomiting, diarrhea, hyperexcitability, seizures, muscle twitching, coughing, eye irritation
*Tomatoes (Solanum lycopersicum) Stem, leaves, sprouts (ripe fruits are OK) Solanine, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Virginia creeper (Parthenocissus quinquefolio) Berries, leaves Oxalic acid Vomiting, diarrhea (possibly bloody), drowsiness, stupor, renal failure
*Yew (Taxus media) Wood, bark, seeds, leaves Alkaloids (taxines) Muscle tremors, difficulty breathing, collapse, sudden death
Posted by therealsilkiechick in this thread https://www.backyardchickens.com/forum/viewtopic.php?pid=2574182
Plants Toxic to Birds Toxic Plant Toxic part(s) Specific Toxin(s) Symptoms
*Avocado (Persea americana) Pit, leaves, unripe fruit, stems Unknown but related to cardiac toxicity Weakness, inability to perch, labored breathing, feather fluffing
*Black locust (Robina pseudoacacia) Bark, leaves, seeds Robitin, robin Vomiting, diarrhea, weakness, depression, collapse
*Blue-green algae (Microcystis aeruginosa) All parts Anatoxin A, mycrocystin Inability to swim or fly, abnormal posture, frequent defecation, respiratory arrest
*Calla lily (Zantedeschia aethiopiea) All parts Oxalates Oral irritation, difficulty swallowing, vomiting
*Castor bean (Ricinus communis) All parts Ricin I & II, glycosidase Vomiting, diarrhea (may be bloody) Note: similar symptoms may be seen with ingested prayer beans, rosary peas or Seminole beads used in beadwork and rattles)
*Christmas cherry (Solanum pseudocapsicum) All parts including tubers and unripened fruit Solanine, atropine-like alkaloids, saponins Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Coffee beans, (Sesbania drumundii), Tea, Chocolate Beans (coffee) Leaves (tea), all chocolates especially dark Caffeine, theobromine, theophylline Nervous system stimulation, increased rate of breathing and heart rate, seizures, diarrhea
*Diffenbachia (Diffenbachia spp.) All parts Oxalates Oral irritation, difficulty swallowing, vomiting
*Eggplant (Solanum melongena) Stem, leaves, sprouts (ripe fruits are OK) Solanine, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Elephant's ear (Colocasia or Alocasia spp.) All parts Oxalates Oral irritation, difficulty swallowing, vomiting
*Ergot (Claviceps purpurea) All parts Ergopeptide alkaloids Poor blood supply to extremities, hyperexcitability, seizures
*Foxglove (Digitalis pupurea) Entire plant, including water from pot or vase Glycosides, digitalis Vomiting, diarrhea, oral irritation, incoordination, irregular heart rate, collapse
*Jerusalem cherry (Solanum pseudocapsicum) All parts, including tubers, sprouts, and unripe berries Solanine, atropine Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, no urine production, paralysis, seizures
*Jimsonweed (Datura spp.) All parts, especially seeds and leaves Atropine, scopolamine, hyoscyamine Irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Lily of the valley (Convallaria majalis) All parts Cardiac glycosides: convallatoxin Vomiting, diarrhea, oral irritation, incoordination, irregular heart rate, collapse
*Locoweed (Astragalus emoryanus) Leaves Swainsonine, alkaloids Hyperexcitability, incoordination, vomiting, drowsiness
*Milkweed (Asclepias spp.) All parts and latex (milky juice) Cardenoloids (cardiac glycosides) Oral and/or facial blisters, irregular heart rate, incoordination, collapse
*Mistletoe (Phoradendron villosum) All parts, especially holly berries Viscumin, viscotoxin Nausea, vomiting, diarrhea, labored breathing, irregular heart rate, collapse
*Nightshade (Solanum spp.) All parts Belladonna, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Oak (Quercus spp.) All parts Tannins Loss of appetite, diarrhea, increased thirst
*Oleander (Nerium oleander) All parts Glycosides: oleadrum, neroside Vomiting, diarrhea, oral irritation, incoordination, irregular heart rate, collapse
*Philodendron (Philodendron scandens) All parts, including roots Oxalates Oral irritation, difficulty swallowing, vomiting
*Poinsettia (Euphorbia pulcheriama) Leaves, stem, white sap Phorbol esters Vomiting, diarrhea, facial or eye irritation
*Pokeweed (Phytolacca americana) Roots, leaves, berries Saponin Vomiting, tremors, collapse
*Potatoes (Solanum tuberosum) Stem, leaves, sprouts, green skins Solanine, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Rhododendron (Rhodedendron simsii), Rhododendron species (Azalea) All parts Andromedotoxin, grayanotoxin Vomiting, weakness, collapse, seizure, stupor, coma
*Tobacco (Nicotiana spp.) All parts Nicotine Vomiting, diarrhea, hyperexcitability, seizures, muscle twitching, coughing, eye irritation
*Tomatoes (Solanum lycopersicum) Stem, leaves, sprouts (ripe fruits are OK) Solanine, atropine-like alkaloids Vomiting, diarrhea, irregular or rapid heart rate, difficulty swallowing, labored breathng, dilated pupils, no urine production, paralysis, seizures
*Virginia creeper (Parthenocissus quinquefolio) Berries, leaves Oxalic acid Vomiting, diarrhea (possibly bloody), drowsiness, stupor, renal failure
*Yew (Taxus media) Wood, bark, seeds, leaves Alkaloids (taxines) Muscle tremors, difficulty breathing, collapse, sudden death
