Birds
File:Petrochelidon pyrrhonota -flight -Palo Alto Baylands-8.jpg

Cliff Swallow

Cliff Swallow

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Spotted
The Cliff Swallow is a highly social bird, distinguished by its dark rufous face, light forehead patch, and pale rump. It is renowned for its communal nesting behavior.
Where to spot
Widespread across North and Central America, breeding from Alaska to Mexico. Found in open country, prairies, farmlands, and near water, always requiring vertical surfaces for nesting.
How to spot
Look for their pale rump, dark throat, and square tail. Observe them flying in large, swirling flocks near bridges, cliffs, or buildings. Listen for their distinctive squeaky, chattering calls.
When to spot
Migratory, arriving in breeding grounds in spring (April-May) and departing in late summer/early autumn (August-September). Best observed during daylight, especially around active nesting colonies.
File:Petrochelidon pyrrhonota -flight -Palo Alto Baylands-8.jpg
File:Petrochelidon pyrrhonota 214524919.jpg
File:Petrochelidon pyrrhonota 220894713.jpg
File:Petrochelidon pyrrhonota 220894821.jpg
File:Petrochelidon pyrrhonota 223431340.jpg
File:Petrochelidon pyrrhonota ssp. pyrrhonota.jpg
File:Petrochelidon pyrrhonota -flight -Palo Alto Baylands-8.jpg
Credits: Wikimedia Commons
File:Petrochelidon pyrrhonota 214524919.jpg
Credits: Wikimedia Commons
File:Petrochelidon pyrrhonota 220894713.jpg
Credits: Wikimedia Commons
File:Petrochelidon pyrrhonota 220894821.jpg
Credits: Wikimedia Commons
File:Petrochelidon pyrrhonota 223431340.jpg
Credits: Wikimedia Commons
File:Petrochelidon pyrrhonota ssp. pyrrhonota.jpg
Credits: Wikimedia Commons
Cliff Swallows are masters of colonial living, often nesting in huge groups of hundreds or even thousands of pairs. Their bottle-shaped mud nests, built under eaves, bridges, or cliffs, are a common sight.
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