Dying aspen tree grove

Asked May 12, 2020, 2:40 PM EDT

We've had a small aspen tree Cluster/grove in our home and it's been healthy for a long time. Recently we've discovered babies popping up around the house. This year however, the grove trees seem to be dying. The branches grow no leaves leaves are drying up, and there's one tree in particular that's growing small leaves at the top, while the bottom is dying. There's also some spots where sap is oozing out. I didn't have enough space to insert photos, however. What's happening?

Taos County New Mexico

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