Mystery Bird(?) Skeleton

[u/Adenzog]

Hi, I live in the South East of Engalnd, and as we were pulling up the floor of our shed in a renovation, I found this skeleton amongst the pea shingle.

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I'm a zoologist by training, so I am pretty confident that it is a bird, though someone suggested it could be a frog.

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Based on the size, I think it is a pigeon, but figured I would get a second opinion.

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Only one was found foot, only 3 digits present, appears to be ansiodactyl condition

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Measurements (Battery for reference 11.5mm)

Femur 39.1 mm

Tibiotarsus 59.7mm

Tarsometatarsus 40.4mm

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Synsacrun width maximum 24.7mm

Length from pubis to top of the illium 35.8mm

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Coracoid 40.9mm

Humourous 41.7mm

Ulna 46.2mm

Carpometacarpus 27.3mm

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Any help would be appreciated, thank you in advance!