Using my thermal scope to see swallow roosts this year made it surprisingly easy to figure out which reed beds had the highest concentration of birds.
2026年に観察したツバメのねぐらは、集まっている個体数が例年に比べて多い印象を受けました。
Barn Swallows in the roost photo 01
29/Jun/2026 Barn Swallows in the roost photo 02
