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Rapporter

Contributeur

Date

Site d'observation

Half Moon Bay SB--Venice Beach and Pilarcitos/Frenchman's Creek Mouth
San Mateo, California, United States
Fichiers multimédias de cet endroit Liste illustrée
Carte
Carte Coordonnées: 37.4770523, -122.4492789
Âge
Non précisé
Sexe
Non précisé
Comportements
En vol; Recherche de nourriture ou alimentation
Mots clés
Volée

Commentaires

Digiscoped

Détails de l'observation

One of the most incredible things I’ve seen. Took up the ENTIRE Half Moon Bay inshore. Once they began to stream north toward the harbor, I watched in my scope rows of ~26 by a column of ~20 moving through in frame for 2 seconds. This flow went on for at least 30 minutes and did not appear to be looping as I could see them fill the end point by the harbor and nothing going south in the distance. ChatGPT helped me estimate because I’m a dumb dumb: “If your field of view contained ~520 birds at any moment and each stayed in frame for 2 s, then the flow rate is 520 ÷ 2 = 260 birds/s. Over 30 min = 1,800 s → 260 × 1,800 = 468,000 unique birds passing through your view.”

Informations techniques

Caméra
Microphone
Accessoires
Taille originale du fichier
30.66 MB