petrel-grande-do-norte vs pardelão-prateado

The Northern Giant-Petrel and Southern Fulmar can be distinguished by their size and bill structure. The Northern Giant-Petrel is significantly larger with a robust, hooked bill, while the Southern Fulmar is smaller with a more delicate bill.

1. Size: The Northern Giant-Petrel is noticeably larger. 2. Bill Structure: Look for the Northern Giant-Petrel's robust, hooked bill compared to the Southern Fulmar's more delicate bill.

The Northern Giant-Petrel is much larger than the Southern Fulmar.