Early Spring Brings Early Spring Birds

In conservation change is usually bad. Habitats change, climates change, bird populations change. Usually they go down.

In birding, change is good. Like when the seasons change. New birds show up.

It's mid March and the Sonoran Desert winter is giving way to Sonoran Desert spring. Gardeners know there is generally no frost after March 15. With this change come the early spring birds. A good two months before the big rush of migrants through the Midwest and East, we start our migrant excitement.

This morning I heard and saw my first Lucy's warbler of the season. It was right in my own neighborhood. No photos--it moved fast and was out of sight before I could squeeze the trigger.

Sonoran Desert spring is a pleasant season bird-wise. Wintering birds linger, many stay all the way into May. You see them side by side with the incoming nesters and the migrants that are just passing through. Many are signing their hearts out. It is a noisy time.

I visited the Rillito Weed Patch last Monday and there were northern rough-winged swallows feeding. Flying in no particular direction, this way and that, a little higher a little lower, they were catching bugs on the wing. Underneath them on the ground were wintering vesper sparrows and a couple of rufous-winged sparrows.

The Rillito Weed Patch demonstrates another difference between conservation and birding, and another instance of "change is good." If you drive north on North Columbus Blvd it dead ends at the Rillito (the "Little River"--now a large dry wash). Walking north from the end of the road you look to the left and see a weedy area, full of invasive species. This is the "Weed Patch." To your right is an area that is beautifully restored with diverse native plants, sinuous re-engineered drainages and lots of habitat for native bird species. Birders have no name for that area. Nothin'. On the eBird map it's just a blank. (Pima County calls it the Rillito River Ecosystem Restoration Area.)

The restoration area has lots of birds but they are the typical Sonoran Desert species, black-tailed gnatcatchers, verdins, curve-billed thrashers. In contrast, some rare species have shown up at the Weed Patch, constituting a change from the ordinary. Dickcissel, sage thrasher, gray vireo, indigo bunting, Cassin's sparrow, yellow-breasted chat and others have appeared. The normal background desert birds are wonderful--they deserve to be counted too!

If birders ever got into landscaping on a large scale who knows what might happen! Weeds, weeds everywhere!

Rillito Weed Patch and Rillito River Ecosystem Restoration Area