A tricky trade-off for the Northern Wheatear
Should these birds breed early or late?
Should these birds breed early or late?
Birds in deciduous habitats are more sensitive to temperature change
American Kestrels migrating over short distances arrive earlier at their breeding grounds.
Tropical seabirds show high consistency of migratory behaviours despite often weak seasonal predictability of resources
Earlier lekking activities enable these birds to cope with changing weather patterns.
Western Bluebirds tend to produce more sons at the start of the breeding season.
How do shorebird chicks cope with less food and increasing temperatures?
Laying dates in New Zealand, no change. Denmark, yes. But new colonies get it wrong.
Identification errors affect predictions of migratory timing in hard-to-identify flycatchers
An intimate look into the life of the mysterious Dead Sea Sparrow