Hi Daniel,

Avian thrombocytes?:

https://www.google.com/search?biw=1600&bih=783&tbm=isch&sa=1&q=chicken+thrombocytes&oq=chicken+thrombocytes&gs_l=img.3...52093.56368.0.56636.12.12.0.0.0.0.239.1416.5j6j1.12.0....0...1c.1.64.img..0.4.632...0j0i30k1j0i5i30k1j0i5i10i30k1j0i8i30k1.XUu3aB_ojgw#imgrc=_

 Hi Daniel:

Sometimes depends of the stain you use the granules are different and there differences between birds. You must to check in some slides the same characteristics of cells. For me are eosinophils, the proportion of the size with the other cells, the nucleus typical (2 lobules), the granules are round, but you can see all together just for the stain. I saw some basophiles of turtles look like vacuoles and the granules that color, but in that case are a lot of vacuoles and the nucleus is only one lobule. They are not thromocytes for the shape of nucleus and ther are not so round, are smallest and depends of the bird can have vacuoles, but usually are in a pole. 

Sometimes some vacuoles can mean reactive or toxic leucoytes. But you must evaluate if the same patrol in all the birds or if you have some birds with some disease or maybe is the capture stress. 

Hi Daniel

I am a biomedical scientist specialising in human haematology. I'm no expert in avian haematology, but I wonder what stains you use for the blood?

We use romanowsky or wrights. As for the cell morphology in your images - could they be some form of reactive heterophils? 

Kind regards

Stephen