09/04/2026
Massive Hook and Rubber Lures Revealed Within Double-crested Cormorant
Our patients have heroes in their lives before they ever arrive at Raptor Education Group Inc. (REGI). Without that one person that notices there is a problem with a wild native bird, we may never know of its situation and cannot help it recover.
A few weeks ago, Matt Clawson and his niece came upon a gasping, dying Double-crested Cormorant near a dam in Mosinee, WI. Cormorants are not ducks or geese but are related to Frigatebirds and the interesting bird called Bo***es! Matt quickly captured the bird, wrapped it in a towel and with his niece holding it, drove the bird an hour to the REGI clinic in Antigo.
The initial examination revealed the bird had breathing distress, however there were no visible signs of injury. Additional testing and x-rays were done to understand what could be going on inside the bird.
The radiographs revealed the cormorant had swallowed a large fishing hook, covered with two realistic rubber crayfish lures. Cormorants eat crustaceans including crayfish. We theorize that our patient was hunting crayfish while swimming underwater and mistook the discarded hook with realistic rubber crayfish as food. Rather than a tasty lunch, the cormorant swallowed a death trap.
The hook was huge, relative to this size bird. The cormorant’s digestive system is specialized to handle whole prey, but “prey” means something that can be digested, not metal hooks and rubber crayfish. Somehow, this cormorant survived the hook and its attachments entering his digestive system and his intestine, however the entire object was stuck in the lower intestine, he could not evacuate or move it further. Surgical intervention was not possible.
We worked on this cormorant for several days using every known method as well as our own creativity, to get the hook and rubber attachments out of his intestine. Finally, on day six, after using cotton balls in the digestive tract and mineral oil strategically timed, we got the lifesaving result that was needed. Our clinic staff and the cormorant were thrilled when the patient evaculated a huge mass of cotton balls, the hook and two rubber crayfish. The mass was found resting in his water bowl one morning!
After a few days eating with great vigor, we confirmed his digestive system was 100% again, he was released with the admonishment to NOT EAT RUBBER CRAYFISH or HOOKS! We wish him the best as he continues his journey in life.
Once again our thanks to Matt Clawson and his niece for saving and transporting this patient to REGI for care. Another big thank you to Hilgers Baits in Antigo for supplying live minnows to our special fish eating patients. It takes a village to do this work, and we are so happy you are part of ours!
Please remember to safely discard fishing line, hooks, lures, and tackle. It can and does kill wildlife of all kinds. If you and your family want a project that will make a difference for wildlife, a great family project is to take a walk around rivers and lakes and look for discarded line and tackle left by others. It is important to safely dispose of this material in secure bags rather than open topped cans. This effort saves many wild birds and prevents suffering.
If you find a bird or other wild animal in distress, retrieve them if it is safe to do so and contact a licensed wildlife rehabilitator immediately.