![Beautiful ring necked male duck swimming in the lake. Black and grey bird. Grey, striped bill and intense yellow eyes. Red ring around neck. Sunny Stock Photo - Alamy Beautiful ring necked male duck swimming in the lake. Black and grey bird. Grey, striped bill and intense yellow eyes. Red ring around neck. Sunny Stock Photo - Alamy](https://c8.alamy.com/comp/W02E7M/beautiful-ring-necked-male-duck-swimming-in-the-lake-black-and-grey-bird-grey-striped-bill-and-intense-yellow-eyes-red-ring-around-neck-sunny-W02E7M.jpg)
Beautiful ring necked male duck swimming in the lake. Black and grey bird. Grey, striped bill and intense yellow eyes. Red ring around neck. Sunny Stock Photo - Alamy
Bushra Specialist Medical Center - These dark brown-to-black rings around the neck are a result of insulin resistance which means the body has difficulty processing sugar. These patches can also develop around
![Close-up of a rose-ringed parakeet (Psittacula krameri) with green feathers and pink ring around neck and red beak Stock Photo - Alamy Close-up of a rose-ringed parakeet (Psittacula krameri) with green feathers and pink ring around neck and red beak Stock Photo - Alamy](https://c8.alamy.com/comp/T5MFRR/close-up-of-a-rose-ringed-parakeet-psittacula-krameri-with-green-feathers-and-pink-ring-around-neck-and-red-beak-T5MFRR.jpg)