Way up in a tree on the 乐播传媒 campus, a bird hammered away at the wood on a recent afternoon.

Mindful of 乐播传媒鈥 birding history, I was curious: What species was this rat-a-tapping bird? The possible pecking order, I figured, included two familiar Maine species: the downy woodpecker and hairy woodpecker.

Professor of Biology Don Dearborn, an expert in avian biology, cheerfully ID鈥檇 the bird after I showed him a video clip and still image.

It鈥檚 neither of those woodpeckers, he said. 鈥淚t鈥檚 a yellow-bellied sapsucker,鈥 he explained, pointing to the black and white mottling on its back 鈥渞ather than a block of solid white, as with the downy or hairy.鈥

And, he added, its red throat makes it a male. 鈥淢ale and female sapsuckers both have a red forehead 鈥 though not visible in your photo 鈥 but only the males have a red throat.鈥

You can tell the species and gender of this bird by the red patch on its throat.

The species’ eponymous yellow belly can be 鈥渜uite variable,鈥 he said. 鈥淭his one appears to have at least a tiny bit, low on its flanks.鈥

The sapsucker鈥檚 chosen tree, located in a small stand of mixed conifers at the corner of Nichols Street and Campus Avenue across from the Historic Quad, is clearly a spruce.

I asked Brett Huggett, assistant professor of biology聽and architect of the 乐播传媒 Canopy website, which species. 鈥淎re its branches hanging down?鈥 he asked me. (Yup.) 鈥淭hen it鈥檚 a Norway spruce.鈥

The sapsucker is a migratory bird, so it can seem a bit more rare in Maine than the year-round downy or hairy woodpeckers. As its name suggests, the and feeds on the sap that oozes out.

The yellow-bellied sapsucker was doing his thing in a Norway spruce (center), a species characterized by drooping branches. On left and right are red pines. This stand of conifers is at the corner of Nichols Street and Campus Avenue.