Delaware Least Tern Fledglings More Than Triple After Nesting Protection
Delaware’s endangered least terns produced 138 fledglings in 2026, up from 45 in 2025, according to a nesting-season recap released October 27. The state’s Department of Natural Resources and Environmental Control credits new predator fencing at two coastal nesting sites with helping the birds succeed.
The statewide breeding population also increased, from 127 pairs last year to 208 this year. DNREC said those numbers had not been seen in Delaware since the late 1990s.
The protected colonies are at The Point in Cape Henlopen State Park and Fowler Beach at Prime Hook National Wildlife Refuge. The October announcement reports the results of the completed breeding season, rather than birds newly hatching this week.
At Cape Henlopen, the project announced in May created two protected nesting plots within an area already subject to seasonal access restrictions. Six-foot welded-wire fencing, with a two-foot skirt to discourage digging, protected 2.65 acres. Staff also deployed decoys and sound playback to encourage least terns to use the plots.
The intervention followed difficult seasons at The Point. DNREC reported 53 nesting attempts there in 2025, but no fledglings known to have survived from that colony.
Speaking to Delaware Public Media for an October 28 report, DNREC beach-nesting bird biologist Shawn Sullivan described the fencing as successful and said staff were seeing immediate results from their management work.
Other shorebird results were mixed. Delaware recorded 25 piping plover nesting pairs and 25 fledglings statewide, compared with 30 pairs and 27 fledglings in 2025. Cape Henlopen nevertheless recorded a site-high 10 nesting pairs, its most since intensive monitoring began in 1989.
Why This Matters for Animals
Least terns nest on exposed sand, leaving eggs and chicks vulnerable to predators and severe weather. Protective nesting areas address a concrete survival problem during that vulnerable period.
The newly reported counts provide a measurable outcome: more young terns reached fledging, and more breeding pairs were recorded. They support DNREC’s assessment of the intervention’s value while describing one season’s results, not permanent recovery.
Continued protection and monitoring will be needed to establish whether the gains persist.
