Don't tell my birds but I use a cat carrier for them. Ideal for short trips to the vets. I don't like carriers with perches in them for sick or nervous birds to much chance of them falling. Plus the roads around here are so bumpy. And for my small guys I use a toys dog carrier I pinch of my daughter.
1 nanday conure Black Jack, 1 Brotogeris parakeet Whiff, 1 ring neck dove Eliza, and 6 society finches (3 are tame). RIP my parent pairs of societies and my little gouldian finches
do you mean brand or size? if you mean brand, mysafebirdstore.com offers a variety of great carriers. as far as size, as long as you can fit food, water, and a perch and have them still able to turn fully around without their tail hitting the edges, its perfect. here are some from mysafebirdstore.com Acrylic bird carrier - FREE SHIPPING!