Meadow Pipit
Anthus pratensis
This is a widespread and often abundant small pipit, measuring 14.5–15 cm (5+1⁄2–6 in) in length and weighing 15–22 g (0.53–0.78 oz). It is an indistinguishable-looking species on the ground, mainly brown above and buff below, with darker barring on most of its plumage; the tail is brown, with narrow white lateral edges. It has a thin bill and pale pinkish yellow legs; the rear claw is conspicuously long, longer than the rest of the rear toes. The call is a faint tsi-tsi. The simple repetitive song is given in a short song flight.
ID text from Wikipedia, CC BY-SA 4.0
Tree Pipit
Anthus trivialis
This is a small pipit that resembles the meadow pipit. It is an undistinguished looking species, with brown stripes above and with black markings on white underparts and buff breast below. It can be differentiated from the slightly smaller meadow pipit by its heavier bill and greater contrast between its buff breast and white belly. Tree pipits are more likely to perch in trees. The call is a strong spek, unlike the weak call of its relative. The song flight is unmistakable.
ID text from Wikipedia, CC BY-SA 4.0
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