The under-tail look on a Haflinger foal
Sexing a young Haflinger starts in the same place as any foal: under the tail. With the mare held nearby and the foal standing quietly against a fence, lift the tail and look at what sits beneath it. A filly has two openings — the anus under the tail itself and, a little lower, the vulva, a short slit that comes to a soft point at its lower end. A colt has the single opening of the anus and smooth skin below it. A Haflinger's pale chestnut coat and light skin make this an easy read in daylight, and doing it while the foal is young and small enough to stand close to is far simpler than waiting until he is a strong yearling with opinions.
The belly and the waiting game with testicles
Confirm your reading along the belly. A colt carries a sheath — a definite fold and pouch of skin about halfway along his underside — and a flat hand run gently backwards will find it even on a very young Haflinger. A filly's underline stays smooth until the small udder between her hind legs. Testicles, by contrast, need patience: a colt's may be down and easy to feel as two firm ovals, or they may be tucked up where no hand can reach them, sometimes for weeks. A Haflinger colt who shows a sheath but no testicles is still a colt; note what you found, and check again as he grows rather than re-labelling him on one empty handful.
Build and boldness sex nobody in this breed
Haflingers defeat the usual guesses. The breed is famously sturdy, deep-bodied, and self-assured, and fillies arrive every bit as chunky, confident, and inclined to march up to visitors as their brothers. A broad chest, a thick neck for a foal, a pushy manner at the feed bucket, or a delicate face — none of these line up with sex in a Haflinger. Watching urination can back up a proper check, because a colt passes urine from his belly and a filly from beneath her tail, but treat it as a supporting clue: foals shift, streams are quick, and a half-view across a muddy paddock has mis-sexed plenty of foals on paper.
Doing the check without a wrestling match
Haflinger foals learn fast, including how to avoid things they did not enjoy, so make the check a non-event. Keep the mare in sight and in reach — a settled dam settles the foal — work in a small pen or stable rather than an open field, and rest a hand on the foal's hindquarters for a moment before lifting the tail so nothing comes as a grab. Keep it brief, reward the stand with a scratch, and if the foal fidgets the whole time, stop and retry at the next feed. Two calm looks on different days, agreeing with each other, are worth more than one determined struggle that ends with everyone hot and the answer still doubtful.
When to get a second pair of eyes
If the tail check and the belly check point different ways, or the foal is a wriggler you never see clearly, have the vet sex the foal at its first health check, or ask the breeder — someone who has sexed hundreds of foals reads the signs in one glance. It is worth being certain, because the answer follows a Haflinger through registration, insurance, and any future sale, and a mistake found at two years old is a nuisance to correct. Record the confirmed sex with the foal's other details in KinsLe from the start, so if this Haflinger is ever sold, Transferrable Profiles hands the buyer a complete, ready-made account of the horse instead of a bundle of loose paper.