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My cockatiel is lethargic after his cage mate died. Is he sick?

Updated On September 23rd, 2025

Pet's info: Bird | Unknown - Bird | Male | unneutered | 0.22 lbs

I've got a cockatiel around 3 years old. Recently his cage mate died and he's been acting out of the ordinary we since. He still sings and talks often but sometimes during the day his behaviour changes dramatically and it's like he's so lethargic and keeps his eyes closed. He becomes somewhat unresponsive as opposed to how alert and active he usually is. What should I do?

2 Answers

Most Helpful Answer

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Answered By Emi Knafo, DVM, DACZM

Veterinarian, Board-Certified Zoological Medicine Specialist

Published on December 24th, 2017

Hi, Your bird may be mourning the loss of his cage mate. However, I am also worried that whatever caused the passing of the cage mate may have been infectious and could be affecting your remaining bird. An exam by your veterinarian would be the best course of action to be sure there isn’t an illness at play.

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    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on October 31st, 2019

    I'm so sorry for the loss of your bird. Birds are quite adept at concealing illness or injury until their condition is very serious. They can seem "healthy" one day and very sick the next. At this point, it can be very difficult to treat him. The cause cannot be determined without a post mortem examination. If you have other birds, monitor for lethargy, loss of appetite or loose droppings. Clean and sanitize the cage, bowls, toys and perches. Discard anything that cannot be sanitized. You may want to have any remaining birds examined by your veterinarian or an experienced avian veterinarian to confirm good health or to diagnose and treat any infection or injury.

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