Another Poop Shoot

I photographed a buzzard defecating in December and today it was Kes. Not sure but I think this little falcon might be a female kestrel. I've shot a blackbird in the past in the act too.

Birds don't have a bladder and instead of excreting urea, which needs to be dissolved in large amounts of water, they produce uric acid which is discharged as a thick paste along with faeces. They have a single orifice called a cloaca for excretion, urination, egg-laying and mating.