I received wonderful photos of both the current Boulder prothonotary and northern parula with FLIES in their beaks. Flies from a few families (Calliphoridae, Muscidae, Tachinidae, Sarcophagidae, Syrphidae, others) regularly or at least occasionally seek out aphid honeydew deposited on plant surfaces. Aphids are tiny. Most of the honeydew-seeking insects are bigger. So, while aphids may be initial target and overriding staple of late-migrating insectivorous birds (along with midges), the aphid-associated insects are welcome gravy they don't ignore.
Dave Leatherman Fort Collins -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/cobirds?hl=en?hl=en * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/ --- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/PH7PR12MB73540CA4E29A951780500B8FC13F9%40PH7PR12MB7354.namprd12.prod.outlook.com.
