Thank you Jan for this envelope from Philippines. Both bird stamps were issued in 2009.
Mugimaki Flycatcher (Ficedula mugimaci): It is also known as Robin Flycatcher and it lives in eastern Asia. It is a migratory bird and it feeds on insects.
Brown Shrike (Lanius cristatus): This bird lives in temperate Asia and in winter it migrates in tropical Asia. It has some subspecies.